Yeah, training mode is vomit tier.
It doesn't look like it doesn't take a frame to unblock, for me unblocking is unresponsive as hell. I'd unblock and it would take what feels like 5 frames until I can press a button. In MKX, unblocking and pressing a button feels more responsive.
Not at all, in MK9 you could release block the next frame after you block something, proof of that, you could punish minus moves with matching startup normals, in this MK, you can't punish a -11 move with a 11f startup normal, you have to use a reversal special.
Kotal F2 is -11, try to punish with KL F2 which is 11f startup, no matter how earlier you release the block, you can't punish that with said move.
What happened in MK9 is that some cancels had ridiculous blockstuns and there was a stance lock, if you block something standing, you will remain standing until every blockstring ends, even if you could block oh low mixups, the stance jail was a key part of the game.