My showstoppers

[Ross B]

1. Maneuver plans. I can't see the results of a maneuver plan.  Apoapsis, periapsis, target intercept points on the maneuver can't be expanded, let alone held open. I can bang my way to land on the mun but the loss of information in the map UI  is terrible.
2. The wobble. Whoever thought it would be cool to keep the KSP1 wobble was wrong. It's not reasonable. Actual distortions 1% this severe would destroy parts. Maybe wobble for couplers and cantilevered parts should be bigger, but for stacked and welded joints? No.
3. Cameras
   1. VAB Camera. I do appreciate the creativity on the changes to the VAB camera, specifically being able to aim it at different parts is very nice. However, but moving along the length of an assembly and then around the assembly are the two movements I need most often. And my most used "mice" are trackballs and touchpads. None of them can do translation easily. Allow this to be customized.
   2. Flight Camera. Maybe I just missed a tutorial but for the life of me, I can't figure out how to change the camera mode in flight.
4. Delta V planning in the VAB. I need to be able to set a nominal altitude for each stage, see start TWR, end TWR, total dV.

[BarbarianSpaceOpera]

^ This. 2 hours in and I'm still struggling to make it to the Mun simply because I can't see my intercept, apoapsis, or periapsis information without hovering over each one for a couple seconds and can't fine-tune my maneuvers by increments with a maneuver window like the one that used to be in KSP1. Until these features are added, it just isn't playable to any degree of precision.