Looks to me like this is another post from a person not already satisfied with what they've got. MWLL is by far the best online mech sim I've played, and the developers spent over 3 years designing it just to release a playable beta.
Suggesting a move to a new engine, which would cost enormous amounts of cash in addition to pretty much scrapping all they've accomplished over the years, and then suggesting your own rules from CBT on top of that, is less like a suggestion, and more of an insult to the developers, saying you're not happy with what they've given you already.
You want a mech game on the CE2 engine based on CBT rules. Go ahead...make it.