This is a feature for "stuff" (mods, items, scripts) title pack. Some people in the community think too many title packs could split players. So for "tracks title pack" it could be useful to be based on "stuff title packs" (like City, WTC, Stunters, RaidValley, etc). Otherwise we could have title packs with the same content (mod / items) with only a difference : the custom campaign.
For example, if a player want to build a "ice trophy" (like "Trophée Andros") with Raid Valley, I don't know how to make that. Is it possible right now and how ? Or is it a wishlist item ?
Maybe we can do that with auto-update but, I don't really know how it work (and with a huge size title it is difficult to make tests) and this solution can only done by the title creator. It would be nice to open this to everyone

I think this could be a important step for title packs. Of course it depends of "what should be title pack ?" and many answers are possible... It's difficult for me to explain, especially in english

