It's a really interesting mod. But I'm getting a lot of complaints on my bob's+angel's server, as these two mod sets slow down progression a lot-- it seems it's not really realistic to use Rampant AI with them.

Would it be possible to have some kind of config option that controls the ramp up so that, for using mod configs like the above, they'll eventually face Rampant AI at full difficulty but at a much later time compared to a vanilla+ setup?

Are you talking just about the attack waves, the logic for avoidance, or everything together?

the issue with this "i know its a late response" seems to be the waves are so constant that evolution skyrockets day 2 plays and at 90% evolution factor and i am only on laser turrets mk2 and bobs biters are so strong anything short of mk4-5 is not going to hold off behemoths

What do you mean by evolution skyrockets? Killing biters has no effect on evolution factor.
Have you tried using gun and sniper turrets?
You could always reduce the biter wave max size and the ramp up to that max size in the config file.