Sci-fi weapons are too difficult to learn?

If true then we can't expect those things to change for Halo 5. If it is an innate quality of game players then this is something that is beyond the ability of 343 to change. They would need to replace the human race with a new species that got sc-fi weapons, and that isn't an option :-)

So let's not expect any change in weapons for Halo 5. According to 343 players will not accept anything other than reskinned: shotguns, riffles, and rocket launchers.