I oppose a larger world and more content.. Both can easily be provided for by mods or expansion packs after the games release. The money should be spent on a qualitative things not quantitative things. Quality over quantity.
In this regard audio is often the most neglected, and it has huge potential, but it needs money too. The aim for this game should be to have the best sound design and immersion via sound of any game ever made, no joke. So if that's not the case, the sound needs more money spent on it, hehe.
I would rather have left over money and time spent on polishing what is already there. Make the decent become excellent, the average become great. Average artwork should be replaced by better artwork, the A.I improved, the game balanced better and so on. This will set a higher standard of quality to expect in future content, for mod makers, expansion packs and even sequels. As well as provide the best foundation possible for future content. (reused sound and artwork)
Also people dislike voice acting cause it's subpar in so many films. Everybody loves the voice acting in Baldur's Gate II cause it's AAA+ in quality, it's the best I've ever heard. So as long as voice acting is of that calibre, you won't find anyone complaining about there being voice in the film. For this game though the budget would be better spent on other things, voice acting of that quality is very expensive.