I completely agree.
Surpremacy, occupying a city is more roleplay than raiding. If you're going to sit there for 15 minute after they die, I'm relatively sure the raid is over, and you're doing something to **** them over in roleplay. I don't care if you want to go RP with your waifu in your city, you're going to need to deal with conflict eventually. A lot of people think avoiding all conflict RP is fun and immersive, but not for a lot of other people. It's not ruining your roleplay because they're occupying a city, it's ruining your roleplay because instead of roleplaying the occupation, you just want them to **** off so you don't have to even touch conflict roleplay. It's not hard to just throw minas at them till they leave or call upon your allies to drive them away if an occupation ever did happen, so I think it'd be rather pointless. Not to mention that trying to get into the gates or shouting things from outside the city could very well be a peaceful protest, even in armour..
That's just my opinion, anyway.