I'll be honest, I wish that multiplayer would be at the beginning and not the end of the road map. Even if we accept that they need time and community feedback to polish the new features, I want to be able to experience those new features with my friends. It would be much more fun, in my mind, to play KSP2 with your friends and experience each new update as a group.
For instance, imagine if I had a save with my bud and we finished exploring the Kerbolar system. When a new update with science or colonies or whatever comes out, we can jump right back in and keep enjoying the game. With the roadmap as it is, unless I wait until 1.0 I'll be playing with the new features already and have to do a new run through at the end once multiplayer is out. Basically, I don't want to see what there is to see and lose interest (at least in the short term) in the game before I get to play with my friends. Just my two cents.
