Super heroes unlimited mod update version 5.0.0 is buggy even the mod dev said it's in Alpha. In addition the last update alpha was on `July 11, 2017` so it's safe to assume that the mod is abandon and no longer being updated. Furthermore you didn't read what in red text
Any mods on Minecraft...
Last time i did attempt to make recipe harder many people didn't like the idea in fact never play in that selection of the hard recipe so I'm not sure doing this again would be the best course of action.
Not really going to add this because feel that the eng2 modpack is very full to the point where other is having issues loading the modpack just going to make things worse but however if you found something very useful I'll consider it.