50 minutes ago, Archaic Warrior said:
Game designers shouldn't need to do all the low level grid work
Game Designers shouldn't try to program either unless they know what they are doing. Don't ge tme wrong, this is my personal opinion as Senior Programer from my long experience in the industry and at the end you are free to spend your time for whatever you want.
50 minutes ago, Archaic Warrior said:
a tool that will allow me to quickly develop a PC 3D war game like TotalWar. I tried over 10 years ago with "Blitz Basic" tool but found the amount of programming, art design, 3D mesh construction and animation TOTALLY overwhelming
So the short answer: Such a tool dosen't exists yet!
The long answer is that you can try to pick a game engine like Unity or Unreal, both offer 3D capability and both have at least some Asset Store packages that you could install in addition to enable Visual Coding:
Unreal has Blueprint built-in, Unity requires some Asset Store research.
But in the end, this won't help getting anything together. You still need to search for or create 3D Models you want to use, build your scenes, UI menus and gameplay by yourself.
My suggestion, try to get a team and your preffered engine and learn how to use it properly