Humm a good roleplay? My opinion will be simple and short. Everything can be concidered as good roleplay if players do enjoy it and no one feels offended. Thats my version and I'm going to stick with it. In world there are many role players who are so in role they play and I find it good. But some of those roles are boring for me personaly and I wouldn't have any fun to be part of roleplay which I would not enjoy.
Everything we do in MD should be for fun. If it become sheadule or rutine everyone will get annoyed and grumpy.
But of course I am new player and can be wrong.
Robin