I loved OG1. Never finished it because all my characters ran out of SP in every battle at the end of the game, so I could never beat the bosses with 100K HP. But yeah, SRT + PS3 + good reviews = import.
Energy Drain. Resupply with Energy Drain missiles will sap any bosses' EN thus preventing them from using highly damaging attacks or their primary damage reduction abilities.
For OG2, you seriously need SP Regen on everybody. Everybody. The Wild Faulker F with Leona in the cockpit helps.