Of course, Marvel has managed to make many complicated arcs and stories work thus far, so there’s no reason to doubt the studio now.
Really, the big worry I have with the revelation that Captain Marvel can time travel is that it’s an unexpected reveal.
After months of speculating on the Quantum Realm and B.A.R.F., to hear time travel will be involved with a character who will only officially be introduced just a little under two months before Avengers: Endgame is disconcerting.