I think he is referring to the movement of artillery research from next to heavy tank research to next to medium tank research.
no, i am referring to the actual artillery tank, it was added because the community asked for something to counter fortified bases
The main advantage my version has, I think, is that I could see friendly armor vision getting annoying for players who don't want to see it. But we can just play around with this version a bit and see if it's a bother or not...
It'll probably be annoying, but once removed you'll miss it. It's one of those features where the functionality is appreciated but it could benefit from being implemented more elegantly. If this were not Empires then I'd recommend refining it before adding.