I also cant see any point in respecing.
The only thing this whole lp to stf char would do is "transfering" half of the xp earned to another char, by spending a loompoint. (limited to STF chars - so you cant just boost another regular alt.)
I think that sounds like a good alternative for wasting half of your XP respecing.
And btw. i dont think that this would increase the money for lps on the Marketplace.. as it is just another way of spending them. Same as implementing a new weapon won't effectively change the need for loompoints.