That could be the reason why there is no worthy successor to XCOM1. Maybe game creators should wake up & see what the real problem is, instead of concentrating on 3D graphics and more of everything. More doesn't mean better.
You are absolutely right. But, then, the people on the project have stated they are not trying to build a something greater than X-COM, and there's nothing wrong with that.
That being said, are there any projects out there that *are* setting out to be everything the original X-COM was? Every other similar project I've seen always ends up being something other than "taking everything that made X-COM great and building on that", and that's really what I believe most X-COM fans are looking for.