In general I think the ability to get lots of edges is good.

However, I don't think pk wins should always give lots (because people with lots of pk wins are already dominant). Edges for genuine pk risk (not just facing large groups because that is not always risky) would be good.

Role writing shouldn't give exp imho, other than by indirectly helping immortals recognise good role playing.

Other than that I think the current system is great. I never get all the edges I want, but I can still amass quite a lot. I'm cool with enemies doing the same. I think there should be more edges available to those that die a lot, to help them address the problems that come with that. For example, outfit command is free and gives quite nice gear and a bit of money, or perhaps a recall and a teleport potion.