Herohero
Hello author, I remember that in one chapter there was a fungus called percepsetas in the shape of a brain that made you smarter. I don't know if this information is useful to you, but I'll leave it here. PS: I recommend creating a body serum, goodbye and good luck.
Since you are planning to create devil fruits, it is worth mentioning that the weakness of the sea is actually a reaction of nature in the world of one piece so in other worlds the fruits should not have this weakness
Herohero:thank you for your ideas (it's always cool👍) and yes dipper will create few devil fruit who have a link with time and space ...
Personally he gain a lot, mainy because he can now create more devil fruits with this tech, fruits that he will take time and resources to create, whats more important is that he is now closer to create a multiverse portal and go other places like the owl house, hazbin hotel maye even star vs the evil forces, who knows, travel to the future its to dangeorus for me, he is already in a play with bills, just when he has bills powers he could travel time without consequences, if mc want op tech then simply travel other universes with op tech that doesnt have broken cosmic entitys
He could create a devil fruit that essentially let's him get infinite powers from devil fruits. After having studied time and space he could create two devil fruits to control and create time and space energy or something and he can use them both to travel the multiverse by using his energy to create portals without a gun.