When on Earth was the LCG nerfed? They still dominate as long as you just position yourself where you're not constantly exposed to snipers. Between EMPs, and being the only unit that can walk away from 6 MRLS rockets exploding beside it, they're far from weak. Also... their spread really only affects their ability to kill infantry. If you're missing Mammoths, you've got other problems. Also... they NEVER have to leave where they're at to refill ammo, making them arguably better at locking people in at chokepoints than any other infantry in the game.
I mean... the chem and flamethrower nerf I don't even understand. Seemed kind of pointless. But no nerfing chemrushes wasn't the reason. Don't just make up false reasons when the actual reasons are right there. That's just plain rude. Also there's a massive difference between *magazine* size, and just *reserve* ammo. Their magazine size was unchanged.
Also I have a 'serious' question. Why on Earth are you using chems to counter tank spam? That wasn't a thing in...... any version of Renegade. If you were just going to bumrush tanks, you grabbed a free engineer or a free AT unit to suicide and C4. Maybe try to kill a repair or 2. You don't throw money at suicide defense. If anything I can see using Chems just to throw nades behind tanks to hit their repairs, but throwing the unit away for $225 is just.... bad eco-management.