I have no issue with level 50 characters killing xpers in the frontier but honestly think those rr5 or above should not earn rps from non level 50s. Same from all realms (although I think 75% of albions stealthers and minstrels above rr6 live in Uppland) I see a lot of high rr's camping DL , SF and CS all time. Two worst offending classes are skalds and minstrels by miles. Sub RR5 characters can pad there rr to get some rp behind them and too practise but killing xpers with high rr seems to be more griefing than anything else. Don't think it helps that all players con yellow to the enemy at level 35. I did not realise this myself when hunting the gorge with my lvl 50 rr2 hunter, if I had so I would not had targeted greens and blues just the lvl 48+ who conned yellow.