If you want options, why would you take the option to use certain mods away from a large segment of the playerbase? Workshop isn't better or easier than other distribution methods. The de facto standard for distribution is the forum itself anyway. Curse and kerbalstuff have nice hosting options, yet most people use mediafire or dropbox regardless. The fact is workshop limits your options, it makes having multiple versions of a mod in one place (e.g. lite or other variants) difficult, it makes configuration difficult, it has size limits, doesn't support modpacks, and locks people out of using it. Overall it's a profoundly bad system. But I guess one-click install is your killer feature here. Try CKAN for that.