See, now you're crossing the streams here. You can cram something into an area where it doesn't fit whether it's a Disney character or not. Splash Mountain at MK is one of the best rides ever created, so people don't complain, but what is it doing at the end of the street in that Old West town? It's between the Western-themed Frontierland main thoroughfare and the Western-themed BTMRR, but now there's an unexplained little detour to the Deep South? Now look at Indy. In Adventureland at DL... exciting adventures into the deepest darkest jungles of the world? Man, that is Indiana Jones! That is a character that fits PERFECTLY. You can argue whether you want non-Disney characters or not at all, but that's different from saying it doesn't fit thematically.