Get into these thoughts and express what excites you about playing
Have always loved the game and this server allowed us folks to play in a completely self sufficient manner without having to rely on anyone else ever, unless we wanted to. I was here before instancing and some zones really sucked but instancing was and is truly the bomb!
If a new tier were to be built, what would you want it to look like? What style of content? Would you want it to be T5 style, or even mimic the content structure of live's mission grinding for credits, doing dungeon crawls. What did you like about previous tiers?
Liked everything up until t10 which doesn't fall in the line of the servers tier progression style. Dungeon crawls are awesome if we can have wider doors so everyone on follow doesn't get stuck.

It would be cool to have a typical tier progression but toss in some non progression super tough fights so the 'we have everything maxed gear folks' also have fun while giving others something to work towards.
What are things that are absolutely dreadfully annoying about existing content that is beyond reason (not talking about grinds, but feature creep)
Water fights, super narrow doors/entry ways, no instancing in t10, sudden forced grouping with others, people suddenly needing maxed non tier progression items in order to minimally survive the next tier when those items should take a super long to achieve outside of tier progression, crazy scripted events to the point of 'its just too much'. Have some but the more there are, the more problems that are encountered. When they supposedly get fixed, it broke others.
Would you like to see an alternative entirely to T10? What would that challenge look like to you (Again, a previous tier style? Dungeon crawl?)
Not sure about this one. If t10 can be tuned/scaled/instanced accordingly then it would fine. If it's so messed up from spaghetti code then something needs to happen with something different. It's a dead progression zone. Scripted events are interesting except when they never work. Heck, there are still things that can barely get spawned in t9 due to messed up scripts.
We started to play on this server long ago after playing on live for way to long. This server gave us a way to play difficult content without the need of ever having to wonder if someone else will be on to group with. Completely self sufficient raiding, looting and spreadsheet RPG fun in MMO style. Play when and where we wanted. instancing was the very best thing that ever happened to the server hands down.