You have no idea why these names were unmasked. You're just filling it in with your own personal sense of victimization.
This doesn't even make sense as any kind of political strategy. Why hold on to all of this until after Trump is president?
If you're seriously asking, I can give you a serious answer.
No one thought Trump was ever going to win, up until 930 on election night. They never seriously considered the idea that they wouldn't have a friendly ally in the executive branch that would help them bury all this abuse of power.
No one brought up the notion of Russia hacking the election until Trump won. Up until them the narrative was "Trump is gonna claim the election was rigged against him if he looses". I'm telling you pleebo no one thought it was gonna happen.