If they did make it possible to make your alts into trusts, it'd better not be the ONLY way. A lot of players don't have alts because, frankly, there's no need for them. EVERYTHING can be done on one character, unless you're a truly hardcore raider who feels they MUST outfit multiple jobs with full sets of weekly lockout equipment.

Personally, I have three alts, all under level 10, and have no real desire to play any of them. Except maybe to run through the Ul'dah and Limsa Lominsa starter quests. Someday. When I get around to it.