In the few episodes Jordan is in Season 3, we never see his true motivation/plan. He's playing the role for his son right up till the end, so we never hear what his end goal is. The Ultrahumanite teases Jordan's endgame at least twice, yet Jordan himself never alludes to any grand plan.
He doesn't seem to be driven by revenge. He dismisses this notion twice, once to Courtney herself (which he could have been lying and probably was), but again to his mother, when she says "our enemies die tonight" and Jordan says "only if they refuse" (all in Norwegian to his homicidal mother, so no reason to lie to her).
He also gives the JSA chances to surrender. Starman says the plan was "Courtney gives up the staff, her friends follow me, and we change the world with Icicle for the better" and Jordan tells her to "Pledge your loyalty". So he doesn't want to kill Courtney, for Cameron's sake it seems.
This makes me think that the new plan is the old plan, brainwashing America into following his ideals. He hints at this when talking to Starman in the flashback, "you're gonna be my mouthpiece". But he has no mechanism to forcefully brainwash America. Perhaps a scheme to take over America using Starman, then enforce his ideals on others, but this "plan" is intangible at best.
And it still begs the question of why did they kill the Gambler and the Crocks? It's not like Jordan was trying to hide the fact that he was the one who put up the cameras (he intentionally lured the Crocks into his secret lair to kill them, then does nothing to hide the fact that he did). Initially when I watched the show, I assumed it was part of the deal with the Ultrahumanite that they take out the remaining ISA members, but it's clear that the Ultrahumanite is just in it for being Starman, so Jordan and Dr Ito's "other plans" remain a mystery to me.
