Eh they can still do it. Just need to fix all the hundreds of things that don't work right and ad lots of things for the mid and late game to make the long game enjoyable. And of course make sure modders can do thier work.
I'm not saying they will necessarily, but they can.
They need to kinda take heart to some parts that are really unpopular though and likewise things that are very requested.
It worries me to read "what does X add to the game?", "X Doesn't fit fast paced action", "Y is a feature NOT a Bug" "Y is a convoluted useless mechanic but is working as intended, here's a math lesson so you know how Y works".
If game goes to release and cavalry still can't hit a guy with it's weapon.... I don't know, I hope somebody can mod it right.