I guess different play styles have diffent needs. Parking an alt on a ship just never occured to me.
I do the same thing. I've got 11 toons currently, 2 of which I use for raids, 3 which I'm leveling and the rest do crafting.
I'll typically log through the crafters quickly, collect sales, kick of crafting / missions, list new things on the gtn, and move down the line, then switch to the toon I'm leveling.
It's very convenient to have these on the ship ever since I bought the ship gtn. Load times are quick, everything is at hand, including mailboxes, etc.
If there were a mod station I could buy for the ship it would be super convenient.