This is something similar to the way Nyzul isle worked. It was a 100 floor dungeon and every 5 floors you could essentially save your floor progress, and thereafter warp to that floor on subsequent runs. Every 20 floors you faced a boss fight that had to be cleared to save that floor and progress past it. If someone had a higher floor they could take you to that floor for a run, but you could not save that progress until you had beaten all the previous floors. Nyzul was a great casual event that only needed a party, could be done whenever you wanted as long as you had an assault tag to use, and was both fun and challenging. The drops were pimp too.
This type of content in XI wasn't really aimed at hard core players though, but content that built upon it (mythic weapons) was aimed at hardcores. The mythic questline was really great because it made you do clear everything from the aht urghan expansion to earn them. I want that type of content included in XIV.
The problem with dynamis in my mind was that it was aimed at the average player, but really only appealed to the hardcore player over the long haul. Dynamis would have sucked if it had save points though.
I want to stress that I do think this game needs events that are built along the same lines as dynamis/limbus/salvage/einherjar in order to be really great. That doesn't mean that the good stuff should only drop from that type of event. I want to see items like empyrean weapons, and I also want to see something like the mythic weapon questline.
I want to have some to earn with the gil I make when all my crafts are maxed out, and that also makes me full attack all the content in an expansion to qualify for. This was what made XI truly great, and it was that greatness that sets my level of expectation from SE. Sometimes I may seem critical of SE but its only because I have very high quality expectations from them. I will not settle for less than their best, and I don't think any other player should either. If I didn't think they could pull off the relaunch of this game I would not be playing it.
That is the impression I have gotten, and I don't expect content aimed at anyone but the broadest base of players until 2.0 launches. This is just my personal opinion, but we are getting small areas like the strongholds or darkhold as a stopgap measure that puts stuff in the game for us to do while they work towards 2.0. I've resolved to be patient and to focus on the basics like getting all my craft gather jobs leveled instead of working towards gear that will be invalidated as soon as the cap is increased. I don't mean this as criticism, and some of those events like Cutter's Cry show the promise this game and the current dev team holds. They should put stuff like this in post 2.0 in addition to more challenging raids.
I cringe everytime I hear these events called raids or endgame though. We aren't even close to seeing endgame and real raids wouldn't force part of the shell to wait outside for their turn to join the event party to arrive. I'm in a shell now that probably won't do this type of event as a scheduled event after we get real raids. It will become more of a thing to do on free days when people are looking to do something casual.