You are just overreacting. The team isn't bad as a whole and half of the names you suggested certainly couldn't do better.
Askia only has ONE professional match. Cortezia and B4rtin also only appeared recently and only after the franchises, although I think they have good potential. Rglm was the second best Brazilian controller last year in a competition of the highest level. (After all Loud, Furia and Mibr were playing)
Pollo is one of the most inconsistent players and his stats aren't that great, same thing with BLD.
We don't know if Raafa is so good IGL, after all Union always loses at least one map against any VCB team, his stats are pretty average too.
Brinks is good, but he came up very close to the formation of the franchises' teams.
Liazzi played for Liberty last year and didn't prove to be better than the Heat for example, I don't know if he would play better or be a great upgrade.
xand is an option, but I don't think he's actually a better duelist than heat, after all, he didn't play in the position for a long time and it didn't seem to have the same impact.
havoc, pancc and NTK are good names, but we don't know how The Union will play ascention. besides, I think Jzz has great potential and I wouldn't replace him with NTK.
I believe that in this Mibr initially, I would just replace Frz with pancc/Matheuzin.