Though I wholeheartedly enjoy the use of live recording with full orchestral accompaniment, it certainly isn't necessary. A small ensemble, replete with virtuoso soloists, should be enough to engage most players & communicate setting-appropriate atmosphere.
Besides, most video game scores aren't exactly symphonic masterpieces, so I'm not expecting the kind of emotion or complexity from PE's music that I would from, say, Elgar's Enigma Variations (which also allows, if necessary due to budget issues, technically inferior conductors/ensembles to be retained). Remember, perfection of gameplay & plot are tantamount to the success of this project; score is but a superfluous bell upon our neatly built bicycle for ~73,000.