Predicting what Trump will, or won't do is sort of a mugs game, for the most part.
The thing about a good theory though, it that it both explains facts, and you can make testable predictions.
Fact 1:
Russia attempted to hack our electoral process through a multi-pronged attack.
Fact 2:
Donald "look how big my inauguration crowd was" Trump has done nothing but deny this even happened. He has shown no willingness whatsoever to hold Russia to account for anything.
Fact 3:
Donald Trump has a pattern of criticizing anyone, and everyone at the drop of a hat. Allies, enemies, courts, free press, nothing has escaped his remarks and twitter feed, except for ONE/(two) thing(s), and that is Russia/Putin
Fact 4:
Russian efforts appeared designed to support Trump
Fact 5:
Trump directly called on Russia publicly to support his efforts to get elected.
Theory:
Donald Trump has been compromised in some way. Either he directly owes them money, or they have evidence of some kind of him breaking the law or doing something he does not want others to know about.
This theory explains those facts, and is fully consistent with observed reality.
Prediction:
Donald Trump will take no action personally, nor will he criticize Russia or Putin in any way in regards to the Russian attack on our elections. He may allow his underlings to do some minor, inconsequential stuff, and if forced to do anything by Congress will drag his feet, if not outright attempt to veto any sanctions.
The way to falsify the theory:
1) Trump criticizes Putin/Russia (good)
2) Trump orders/takes action that materially harms Russian interests (definitive)
Bull conspiracy theories fail very often because either: they cannot be falsified, or they directly conflict with observed reality. This theory can be falsified, and does not conflict with what we know as fact.
Donald Trump is unpredictable except for Russia.