The more I play reaper, the more I feel like it's DRK done right. In some aspects.
You got 3 ressources too, they feed on each other properly. Your 1 2 3 combo is the least interresting part and the one you'll use the least, but most of your special attacks are still weaponskills.
You have a shield that is always beneficial to use on unavoidable damage or when you risk taking an AoE, as it helps sustaining everyone else. Also has a very noticeable visual effect when broken, and a distinct sound that looks and feel satisfying.
The synergy with the avatar is satisfying and I wish it was an actual character with some more fleshing out (though this leaves room for roleplay and headcanon, which is a plus in itself).
There is things to learn from RPR for possible DRK reworks, honestly.