For casual players (me), here's what end-game looks like:
Einherjar - Inaccessable. Requires too many people. Unlike Japan, the US has to deal with 3hr time zone differences between friends, so getting 18 people together just isn't viable for casuals, especially on some kind of regular schedule. I have all feathers up to tier three from doing this with a handful of people, but it gets too hard to low-man after that.
Legion - Inaccessable. Not only does this take a lot of people, but they need to be elite. I may never know what the inside of a legion zone looks like.
Abyssea - Perfect. Can show up with any group size, accomplish minor goals, make progress on major goals, get exp/gil. This is literally the only reason I have been playing; there is always something to do and it's always interesting.
Dynamis - Very good. The mandatory JA procs and reliance on TH makes this boring since only a tiny selection of jobs meet both requirements, but the event scales nicely with small groups and the reward system is acceptable. Magic procs should happen at the same rate as JA procs, and WS procs should have the highest rate (10% chance per time stat). The Arch NM's are all impossible for casuals, but there is enough reward available without doing those.
Magian Weapon Trials - Good. It's nice that you can do this at your own pace, but some trials are needlessly boring. Weather trials were reduced drastically to combat this, which was good, but the same treatment needs to happen for "Killing Blow" trials and other similar things. For example, I can't bring myself to keep working on my 100TP Great Katana because I have already finished three trials by doing six hundred weaponskills (bored to death while doing it), yet I am left with a requirement for two thousand more. Without this weapon I'm unable to play my SAM in events. The result is I don't play my SAM any more, and it's depressing.
Limbus - Mediocre. If I could do Limbus daily, I would farm my own coins and get AF+1 things in the process, plus get chips for the original U/O fights. But I can only do this two times per week, and that means I can't afford to waste an opportunity to do the new Arch-U/O content requirements. The result is that I farm Dynamis for money to buy 75 or 150 Ancient Beastcoins from other people. The time restriction has turned a once fun and rewarding event into a money-sink that I want to put behind me as soon as we finish getting gear form the bosses.
VoidWatch - Mediocre. The event is generally well designed and fun. The ability to teleport around Vanadiel is great! The reward system, however, is infuriating. For example: My girlfriend got Ace's Mail on her first fight. It's on her Mannequin (she can't use it). She wanted to make it into a Pulse: Cell and give it to me, but then I would only have 1/5 of an Ace's Mail. While there is a chance she might someday use her mail, there is no chance I will be able to use 1/5 of an Ace's Mail, so I told her don't bother. My girlfriend also has Hekka's Kalsiris where I don't, so until I get this she's kind of stuck being our healer. Being stuck in a role because of luck is not fun. Finally, my girlfriend got Mekira-Meikogai the other day and put it on her 2nd mannequin. Even more amazingly, on our next attempt she got it again and took a pulse cell. Then we got more stones and tried again and she got it again. Then we tried it again and she got it again. So, she got 4 of them, put 1 on her mannequin, took 3 pulse cells and gave them to me, all in the span of about an hour. What was the net result? Four times she got lucky, and her reward for that was that I had to take four million gil out of our shared bank to buy the other two cells to complete my armor, even though she earned the thing four times. If we had beaten Byakko and got four Haidate in the old days, that would have been 4 Haidates in our linkshell, not 1 plus a four million gil debt for a second person. The fact that it takes one person getting lucky 6 times to get 2 body armors is terrible when you consider the drop rates. Trading 1 lucky occurance for 1/5th of an item is unfair. 1 drop should be worth 1 drop. The other frustrating thing is the hundreds of Qilins I have done with her, and I have yet to get myself a Lux (she's gotten 5 or 6 of them).
Meeble Burrows - Poor. This is another interesting and fun event at first glance. The time on it is perfect, the activities are interesting, and the rewards are exciting. If entry were restricted like Assault tags OR boss fight entry were restricted like Einherjar chambers are, then this event would be fine. You combined both restrictions in one event though, so now the time it will take to earn this gear stretches off so far into the future that I can't visualize success. Add to that the fact some items clearly won't be 100% drops, and this requires efforts of such great duration that by the time all of the gear can be obtained, it will be obsolete.
NeoNyzul - Terrible. Too difficult. Casuals can actually do everything in Nyzul; we are able to beat all bosses and many of us have captain rank and floor 100 tags from 75-era; we loved that event. What we can't do is finish this event before timing out. As a result of NN, the best geared people in the game get even better while the casual crowd is locked out of any hope for success, and that's totally unlike the old Nyzul. You need to allow us to save our climb by choosing to exit after defeating a boss, so that even if it takes us five times as long, the casual crowd has achievable goals to work for, yet the challenge to win is retained.
You guys are so afraid that we will beat all your content and quit, that you make it so only a tiny handful of people can actually beat it. The result is that I can't stand any of it any more. If I were winning most things, I'd play more, not less. You have it backwards.
Anyway, Voidwatch made me feel like I wanted to quit, but I stuck around for revamped events. NeoNyzul turned out to be a spectacular failure and I nearly quit except that I was willing to stick around and see if you would fix it. Then I heard Meeble Burrows was actually really interesting on the test server, so that was another reason to stay. Now, with the actual release being so time-consuming that there is no point in trying, and nothing being fixed about your previous problem events, I'm done. 3 strikes and I'm out.