As a member of small nation, who have to usualy wait for 5+ years in order to get at least subtitles (7+ to get decent ones) to anything ... if ever in the first place.
I think this isnt bad idea.
Go to some recording studio, find out what it will cost, make a collection, contact people who will be willing to record it ... and then when you will it all done, contact Larian with proposition.
Im sure most people would give up somewhere around step two.
