I'm guessing the Nexus Client will automatically ask you if you want to download a file marked as a requirement, if so it would be best to have a link to said file so you could see what it requires and if you actually want either file. So to have that, instead of some auto-download feature which doesn't ask/tell you it's installing a required file, would be good. PS: As I said that's a "guess", it's quite likely being experienced authors you've probably got it covered. @Elrumel - BOSS for Fallout may be what you're after, haven't tried the Fallout one myself but BOSS (Better Oblivion Sorting Software) works well in Oblivion. All depends on the game you're playing I guess.