I think it was not just BigBoy who got upgraded.
Any mission increased explosively in difficulty.
Remember the cute Ramboy in insane mode?
Only 500+ hp and heat cap and regen just so much that a maxed out Corrupt Light with 93 heat damage and 24 heat cap reduction could send Ramboy into shutdown immediately with the first attack.
Now that doesn’t work anymore:
I`m really looking forward to how new players are supposed to beat Ramboy in insane mode now.