Have I read all the messages? fuck no. Am I still throwing in my two cents? Yes.
Regarding the czar:
Most ppl dislike the czar because it feels "underwhelming". I've had this discussion a lot (especially trainees reaching from 500-1800 range) but the main issue is that they're using the czar wrong.
Especially low ranks see big laser and big unit => must throw into enemy base.
Meanwhile it's about kiting air units (while being covered by a few sams) and stacking multiple czars with the goal of winning air, if your opponent doesn't micro properly, the ASF will get one or two cycled by the czar stack => air won.
Just something to keep in mind and especially which direction the czar's purpose should head to.