Basically what this mean is the larger you get the hard it become for anyone to take anything from you which is basically the opposite of reality. Large countries should have a hard time keeping Everything while you really need to defeat a small country to take anything.
Uh..no? Thats how it should be? You can take a province from a great power just fine by holding onto it for some time. And a province is enough. Why should a great power be forced to lose multiple provinces just because it got some backwater region occupied? How are you going them to force them to sign a peace treaty if you don't occupy anything important and they still have their military potential and heartland untouched? Its a great power for a reason.
If you really want to take more, you ought to have to work hard for it, because, in reality, Internal stability and revolts were a far larger threat for most large empires than external enemies. Because a great power is a hegemon by definition. It seldom has any serious rival states.
One thing you cant do against small states that you can against large ones is inciting rebels so they secede and then going to war. And we saw that it works just fine as a tactics. Saxony would have gotten completely dismantled in one war had the Bosphoran not helped them.
Basically the current version mean that the Alliance can not really ever hope to defeat Rome because to take anything serious from Rome they need to occupy the whole country which is not going to happen.
Not true. They just need to get 50% warscore and they can stabhit. Battles alone cap at 25, you get another 25 from full wargoal occupation, you can easily take quite a lot even if you dont even touch Italy proper.
And still you support a thing that boost wide not tall.
No, you support something that lets a great power gobble up a major one in one war. What I'm supporting is keeping great powers just that - great. While not making everyone else free clay either.
To be honest, watching the coalition wars with Rome last clash was the most interesting part of all the dev clashes so far to me. It just felt like... a proper war, you know? Not an, inevitable, one-sided, though maybe delayed due to need to siege, stomp like 90% of all conflicts in EuIV.