I'm mostly concerned with the following.
A.) At this point I'm kinda even doubting it'll ever come out. With so little core content being actually released (let alone content being actively revamped in anticipation of compatibility for the update) and so much of what is getting released just being fluff extra transforms and user-created scenes/characters as well as with how it feels like we've been talking "SPACESHIP UPDATE!!!1" in serious tones for at least a year now this is starting to feel like so many other Patreon games where they promise the world and then never fully deliver or just suddenly fall apart and never deliver as a whole.
B.) I'm afraid if it does finally come out I'm suddenly going to be hit with like a dozen "This person doesn't fit on your ship and has gone "home" messages, which won't be even remotely fun or amusing. Yet this is just one of the many problems that has to be dealt with due to allowing more crew members now than slots that we'll ultimately have available.
C.) Something I touched on earlier and others have already touched on, scene compatibility. Will I still fly into and dock in Glastigoth on my giant-arse capital vessel? Will things still be cramped on my luxury cruiser? That sorta thing. I see a lot of scene re-writing for optimal implementation, yet, realistically, I see things more likely being just implemented as quickly and vaguely as possible to get it in so we can start back on more transformatives and random never-to-be-updated-again characters that'll still be calling you some derogatory term and acting like they're tough poop despite the fact you tower over them and are essentially a half ton wall of pure and unadulterated rage and muscle. Oh, yeah. REAL intimidated by this little seven or eight foot dood when I'm over a story tall.. oh, no, wait.. I somehow am and I'm forced to act subby and swoony every time I'm around this specific person. Kay. Also.. so maybe this last bit of this point is unrelated to scene compatibility and ships and just a little rant. Sorry.
D.) That at release I'm afriad that even if I have enough money for the ships I want I won't be able to get a ship large enough for the entire crew I already have aboard the space-wannabango so they'll still just be sent out to the edges of the nowhere until further updates.
E.) Ship storage. I'm running out of it so will this upgrade? Will storages carry over from ship to ship or will I have to meticulously pack everything I want to bring over into my pack and leave what I can't fit behind?
G.) Speaking of characters that never get updated, I'm concerned Hand So never will, either. I pretty much want to plug her into all my ships with this update. I'm less concerned, admittedly, about this as it feels like something that's just sort of "meant" to go with the ship update and it ultimately will if the update actually happens, yet I could be misreading things and be totally off about that.
Those are my main speculative fears for the whole ship thing. None of them can really be said one way or another with any true certainty and are just "time will tell" sorta things. While intentions can, have been, and will be stated I'm a bit too burnt out on unfulfilled promises from other things and too concerned with the lack of focus on core game content to willfully believe in something before it actually happens. No complaints, really, just thoughts, concerns, and speculation based on what I've seen and experienced thus far.