I'll break it down into what I think we should and shouldn't do, vaguely.
Roadmap pick:
Raid System (Original Post)
I think this has a lot of potential, and if done right, a lot of players could get a lot of enjoyment out of it. Of all of the items posted, I think this is of the few that is large enough for you to build a roadmap around.
Should do:
Warfare Shop Items (Original Post)
I think tons of players have WFPs sitting around doing not a whole lot for them, so it'd be nice to have a good use for them.
Inventory Revamp (Original Post)
Please please please! I don't think this is a big enough thing to be a 'roadmap' though.
Hospital Revamp (Original Post)
I don't think having the hospital close adds enjoyment to the game. I'd be happy to see it go away.
Shouldn't do:
Rogue Viability
I actually like the idea in general, I just think that it's probably going to be a fair bit of work and I don't think that all that many people will get a lot out of it. So, neat idea, but probably not the highest ROI of all the roadmap ideas.
Crystal Levelling (Original Post)
I don't think I actually understand the idea well enough to comment on it.