As long as they bundle in everything even future content, all champs, all skins, all ward skins, all chroma's, all everything for all time. Which is not possible, there already exist skins that can't be sold anymore. But it would be nice to have that option.
I also wish there was an option to buy a permanent ARAM skin boost where you get every skin instead of a random one, that might actually be worth it instead of throwing away cash on a per game basis. As long as you actually got every skin for the random champion, not just what happened to be available at the time. It would not even have to unlock skins for team mates or give extra IP (the extra IP would be nice though XD).