They already have ideas. It's probably more about where else the focus is.

If it was someone other than Biden I'd have guessed Syria would be high up the list, but given the Obama admins admitted failures there & Biden supposedly not being so hot on it the first time I doubt it. Plus, with Israel bombing the shit out of Damascus the other day they'll probably make their moves through proxies. Especially as even any diplomacy rather than force would mean playing nice with Russia.

My guess is that East Asia and maybe even support for Northern India will be the focus in order to ramp up forces and pressure against China. Throw in a good helping of traditional anti-Iranian moves heightened by trying to interrupt trade connections they might have with Russia and China. Then of course there's Africa but it seems they're amping up the drone war there mostly while also using allies like the UAE.

Biden's going to busy escalating the evils US imperialism regardless, but the question is probably how complex those theatres prove to be in terms of whether they make a serious push in South America (Venezuela and Bolivia specifically, but others too) or mostly keep it on the wish list. I definitely wouldn't bet against more destabilization attempts with mercs, sabotage, CIA shit etc though.