I want this as much as anyone, but the political reality isn't as easy.
First off - prosecution isn't gonna happen with this administration. The legislature may have flipped, but the Justice Department is executive. Of course they should investigate and do everything they can to preserve evidence, but they can't prosecute and if they're too heavy-handed with the investigation Trump can pardon his gestapo.
Abolishment or defunding are technical possibilities, but I don't think they'll be able to get a veto-proof majority. They'd need a bunch of Republicans to flip. That's actually a possibility in the Senate, where most of the remaining Republicans realize they still hold their seats because of electoral timing. But the Republicans in the House just won re-election, and if you coupd win in this environment you're pretty safe.
So defunding will probably come down to a government shutdown. I personally think stopping Trump is worth a shutdown, but it's a big political risk going into 2028, and the Dems NEED to win the White House so we can start prosecutions.