The deciding factor probably isn't technological but rather human. If you want to keep your teams to 5-10 people and you want to maintain autonomy for teams as you scale, you'll need to split up your monolith.
I've been using a Microsoft Natural Ergonomic keyboard for a long time and it's relieved a lot of wrist pains I used to have. I'm a little tentative to switch to something without a palm rest and without being able to position my hands farther apart.
This looks pretty good, though. I've been looking for a new mechanical keyboard for a while but haven't found anything that quite fits yet. Would love to hear some reviews once this gets out there.