D:OS is not a void, it makes sense to view it in line with other videogames, since heck, it's a videogame. And unlike AAA+ BioWare games, it wont have a AAA+ budget. As such, decisions need to be made. What's more cost/benefit efficient for example.
You know, learn from mistakes/history lest you repeat them and all.
Obviously Larian did take lessons from their previous experience as can easily be seen by the differences between the 2 Kickstarters.
Yes, you are here asking that for this game. So we're looking at other games, past experience, costs etc. to see if it's "worth it" or a good idea. I can also go here and suggest that the Kickstarter $1000 backers should get a Ferrari. Big chance some cost/benefit ratio says "screw you"

We can just as easily talk about Mass Effect II or Dragon Age II or III or any of their other modern games who simply tell most RPG-fans (who backed D:OS II mind you) that there's no shred of BioWare left in BioWare and rather venture to Kickstarter for their RPG fill, since BioWare certainly doesn't give it.
For reference, here's a topic on the Obsidian forums about exactly the same thing, VO to a oldschool RPG. I can tell you most of the biggest RPG fans are not in your favour:
http://forums.obsidian.net/topic/75700-willing-to-pay-for-a-voice-pack-dlcFreelancer was in development for 10 years. BioWare also made KOTOR1 in a 4-5 year timeframe (compare that to the 1 year Obsidian got for KOTOR2). Their own Neverwinter Nights also massively overscaled it's projected timetable. And as you probably wont recall their publisher Interplay got bankrupt even if games like Baldur's Gate II did well. Also I have to have a big laugh with Halo or Tomb Raider(!) being apparently big "first time feature" games. L.A. Noir? Aside from it's face caption technology it's got nothing either.