"Curious about the decision to go for the extra unnecessary B instead of F13 in the base though. Did no one else pick this up or mention it?"
Can't speak for F13 but there is immense pressure to keep base kit cost down. The extra B is for Alice users and there are probably more Alice users than F13 users who dont also wanna put a lychee nov in F13, and the rate at which it's a dealbreaker is probably also different. Why not put it in the spacebar kit? This adds a color to the spacebar kit and a doubleshot one at that. Per designers and people who get quotes and talk about em-those additions to the spacebar kit are several fold more in cost than it would be in base. My guess is there's another theoretical spacebar kit design that doesn't use the accent colors where the total 'bar kit cost is low and it was done differently.