No thanks, Coldtech was an awful system, and "Sandtech" would similarly be terrible. I'd like far less RNG, not more.
RNG like this is bad and only very casual players enjoy it... and then not even they universally like getting randomly shafted by the game.
Why do you think it's bad? Until OKW came along coldtech was not imbalanced, both sides had to deal with it. It creates random tactical variety, this is a game about war after all, learn to adapt and deal with a little adversity.
IMO Coldtech's biggest problem was whiny forum posters who got outplayed and had to find something to blame, however those people won't be satisfied until maps and factions are mirror images of each other with no charm or variety so they should have been ignored. Coldtech could have been refined and optimized but Relic chose to take the path of least resistance and I reckon coh2 is worse off without it.