The thing about a physical map is that you would have to put your weapon aside when you want to view it, which could discourage people from checking their map, leading to more team kills (if friendly players are shown on the map).
As for suppression, the only game I've seen do suppression effectively is Project Reality. In PR, you need to cover, you can't see a thing when you're suppressed. It's genuinely frightening. Whereas in Red Orchestra 2, your screen blurs and discolours, and doesn't have the same immediacy about it as in PR, and it certainly doesn't feel as threatening. I'd like to see something like PR, mixed with how your weapon moves when eat bullet lands near you like in RO/RO2.
Not sure if I like the idea of suppression being lowered when you're around team mates. It's not like being shot at is any less threatening when you have mates around. Or maybe it is, I'm not sure.