Seriously,  this game has a unique community that will absolutely never leave no matter what you do to them. It's ripe for the picking.

So I propose you implement the following pay to win options:
- Release T5 mods but players have to purchase the spark upgrades to be able to boost them.  The boosts are temporary requiring the player to spend more later.
- Super-nexus mods that are $$ only. 
- Super PvP ammo that are $$ only.
- $1 to retrieve a lost bot that was blown up in PvP combat and all of its fittings.
- a $$ item that forces a SAP to unlock at the time of your choosing.
- a $$ item that does 10x damage to gamma buildings.
- a $$ market that sells gamma buildings

Just think of all the joy Syndic and co would have destroying people's hard earned cash investment and the following butthurt and vengeance streak these psychotic compulsive players will inevitably go on.

-K