Alright, alright... Let's meet halfway with this marauder business. Because I do think it is a good idea. What I would suggest, however, is that instead of adjusting base stats we make a siege model. Not unlike what is in EVE. It can only be affixed to a Marauder tank and once it is would provide massive HP, regen, and buffer capabilities. In exchange movement is limited and turret tracking speed is reduced.

The basic stats would remain the same as, say, an enforcer or basic model but it will have the extra siege mod for raining death and destruction without becoming the god Kartikeya and blasting any who oppose them back to the stone age. Of course for it to be worth it the boosts would have to be far superior than any extenders or buffers can provide and it should be able to run completely stable on a marauder for a long time. Maybe even indefinitely provided there is a long cooldown once turned off before it can be reactivate.

If someone has suggested this forgive me, I panicked when I saw the stats.