In my opinion I agree this is correct. Keep it simple.
I know it won't happen (costs, low volumes, etc) , but I think a much larger displacement in-line 6 or V-8 series, designed for primarily using LNG,CNG,LPG fuels, and kept as simple as
possible, with uses for other markets also, (other OEMs, Industrial, etc), would be interesting.
In many years past, didn't the company have a department/division that marketed engines ?