1) While yes at the same time XIV is just one game, I mean if you have fun just playing one game that's fine but you don't always need stuff to do to keep your busy, sometimes what's best is to do other things outside the game than rely on the game to offer you content to keep you satisfied year-round.

2) Scripted fights are a way to keep balance sadly, see by making fights more dynamic all you do is put more pressure on healers and tanks to adapt to the fight, DD don't really have anything to lose by a non-scripted fight because they just gotta not get hit, to survive. With a Tank though, random actions/sequences that occur could cause more damage than normal and with healers having to heal for harder hits their MP drains faster. An unscripted fight generates an unfair treshold of losing because the boss decided to use hundred fist back to back and what fun is that to lose a fight all because RNG said I'm going to use my mega super strong ability twice? At least when a fight is scripted you know the limits and how far your job can take you but the moment you throw a wrench into it all you end up doing is making it harder for Tanks/Healers to deal with the content.

3) I will admit raids do have their issues however I think the type of raid people really want will be seen in island exploration. With the way the 24-man hard mode area sounds like, it seems that's the type of hard raid-like content players want. That's the thing, in today's MMO world it isn't exactly easy to get 24 people to always be up and ready to do content, even in the days of XI Dynamis getting that many to dedicate 2-4hrs to content wasn't easy, think about that for a second, 2 days out of the week you are asking a large group of people to come online at the same time and set time aside to do content that could take up to 3hrs, 4hrs if you consider getting there on time, waiting for others, going in etc etc. 4hrs is 1/6 of a day doing that twice over months is a lot to ask out of a large portion of people, it's much easier to have a "raid" content with 8 people because organizing 8 is way easier than organizing 24 and battle wise it's easier to balance fights with 8 in mind than 24 in mind.

When it comes to island content however it's less about point A to point B and more about setting your own path, going in, testing the waters for 90 minutes, learning new things and then going back to use what you learned. There is less structure towards a forced path and there isn't a sense of needing to get to the last boss to "win" that has been in every content released up to now. Island exploration offers an experience to allow you to go in with 2-24 people and do what you can, push as hard as you can, and challenge yourself that I think you are looking for when it comes to expressing the lack of 24 man "raid" content. If you played XI when Dynamis was first released and even the change, this is what island exploration sounds like it will be like.

4) Eh, besieged campaign, FATEs are pretty much those, you can do FATE and obtain xp for a job or seals for GC to turn in for items and profit yada yada but honestly what was campaign or besiseged but content to gain xp and some currency to trade in for items? Doesn't that sound a lot like hunts and FATE? Though I will say, it would be neat to have a Campaign like content where Beastmen tribes attack and summon their primal to cause havoc in certain areas, while sadly it would be difficult to implement into 2.0 zones it could fit into 3.0 areas maybe even something that erupts through the Alexander storyline, beastmen want it for themselves and now you have to hold them back. Heck man go one step up and have it where when the beastman "wins" it makes savage mode harder, since savage mode can only be done with people on your server it could be setup where when x tribe overwhelms and "corrupts" alexander it alters certain aspects of the fight making it harder which would encourage groups to ban together to prevent the beastmen from making those encounters tougher.

5)PVP could easily be fixed by creating a unique instance server for that content. There is no reason why USA servers should be segregated from one another, they are all in the same location so it would benefit SE in terms of keeping PVPers around to create a cluster of instances in which it grabs from every NA server rather than the current system. I honestly think this would be hard to pull off if anything they could change it where the restriction is that you can only queue for PVP or Dungeons, so if you want to PVP you can't queue for frontline and a dungeon in the same "queue" of waiting because they are off different servers. With that mentality I think the stress that would be put on the servers would be alleviated because when you queue for pvp it's only focused on pvp areas and it's grabbing from all the other servers in NA area that want to pvp, by doing this you would increase the grab of people able to pvp by quite a bit and it would satisfy a lot of players who may be disappointing by the way it currently pulls because you are in essence missing out on half your competition because if you are on Aether, you can't player with Primal and vice-versa.