HelloDarkness07
Hmm Baldur isn’t mentioned at all i think in the MCU so i guess you could justifiably send him on an intergalactic expedition for a few hundred years. Hell, you could say he falls into a rift and ends up far away from asgard and spends the next fee hundred years adventuring, learning and getting stronger. Then he can arrive back at the beginning of the first avenger movie. Loki still went down the betrayal path because he lost his favourite brother, Thors arrogance was no longer tempered by Baldur so he reverts back to the way he was in the movies. Then when he gets back he can cause some chaos who knows
But still he should find a way for body agumetation. At least combine his Gene with the Strongest Frost Giant Warrior and Most powerful Frost Giant Wizard or Sorcerer. And you should know that Hela his very strong that she was able to break Thor 🔨 Hammer. And she is a pure frost giant whose Father is Loki and Mother is the the mother of monsters Angrboða.
Maybe he can visit some alien civilization to learn some advance tech. XD Can he make his body stronger by absorbing the Sun's radiation like a kryptionian? XD. How about the Sentry Serum? But that would be made in 1980's. Correct me if I'm wrong, I think that was developed by also using the Sun's radiation.
Make him go to earth and help the vikings UnIte scandinavia , so that his leged’s will Be told in modern times , and he is worshipped in europe , like a religion that was not destroyed or a cult, while he learn’s magic with the acient one. Make the Scandinavians worship him more than Odin , that would be a huge F U K you To Odin.