Well I agree with some of these points and don't bother with others (Looking at you crafting).
This an expansion, not a new game. It's just adding onto what we already had. There is "new" variety in jobs/skills ect.
But anyways most of the problems you listed are things that usually already happen or things that have been around before the release of HW.
I feel like gold saucer was just a nice little filler to do in the mean time as a means to take a break from the usual content of running dungeons and what not, I'm also guessing that SE is planning on releasing more content for it so just give it time.
PVP was never really something I got into but I did join in a few times with friends just to play it out and see what it was like. As for the gear restrictions honestly I don't see that being that big of a deal. Older gear ALWAYS gets changed, in one way or another for players to access it since it is now "old" content. Anyways as someone said people who usually got that gear was because they enjoyed pvp content, not the gear that came with it.
Housing has always been a problem, long before HW was released. I would like it fixed though.
I can't speak for crafting because it is not my thing.
I can agree on the retainer part but I don't understand what that has to do with motivating someone to play. I understand that having to manage your items/gear more efficiently is a bit of a task and sometimes you end up having to drop things because of space management, but I'd hardly consider this something to stop someone from playing.
Just my thoughts, maybe you just need a break or maybe you could go play another game for a while.