From my past experiences in various IT companies here in Austria I think that in one company we had ~10% with "ergonomic" boards - including the wavy MS ones. However, I was the only guy with a mechanical board in there so
(Personal opinion - this does not reflect Eve's stance on the subject)
The main issue that I personally see with it is that there is right now NO BOARD (meaning laptop keyboard module) available in that ergonomic layout.
We'd basically have to adapt a board or completely design a new one - and I'm just pulling out numbers from my magic hat, but I'm pretty sure we're talking about a 6 digit amount to make the layout.
And that is a pretty large number. And I'm just taking some random numbers from now on for a small calculus example, and take some numbers that could be real.
Let's say we made a BLANK ortholinear board for 150.000$ investment costs. And we've got 2000 of people that are INTERESTED in it overall.
That are 2000 sales that are INTERESTED in the ortholinear layout. If everyone of those interested bought an ortholinear layout we'd have to add 75$ on top of the current keyboard price to just cover the investment to develop an ortholinar board. Now, that's not the final cost added because that's just to cover the investment. If we're the only ones to want such a board I'm pretty sure the production would be more expensive due to small production numbers - that also adds to the cost. Let's say 25$. Now, of those 2000 INTERESTED - are really all 2000 willing to pay 100$ (75 investment + 25 production) extra for an ortholinear layout?
I'm not so sure about that.
Don't get me wrong, but if we e.g. sold less Vs overall or the amount of people really buying them aren't as high it'd only get more expensive.
And the kicker is - we were just talking about blanks up to this point. I'm not that deep into the whole manufacturing at this point in time, but I'm 100% sure that they'd not make the layouts cheaper.
Finally, as @pauliunas said more shortly, it's hard to make it feasible in my opinion.
(Again pointing out, that this last part is reflecting my personal opinion & not the official stance of Eve in this matter)