I was tempted to place a claw of vulkoor solo backpack video next to a R10 charm video and ask people to compare the level of skill and tactics needed. I found the level of tactics in charm completion to be quite low.
What is great is that nerfing the least skilled tactics in R10 would actually remove most of the complaints made by those using them in R10. (Mobs of HP on boss, etc)
You are exactly right that balancing the game around mid reaper (removing cheesiest tactics) would fix the majority of the issues with melee, and also handle the complaints of those in R10.
It's really a no-brainer. If a few people no longer feel special, well they really never should have in the first place.
Do I mind if people use extensive skill to complete R10's? Absolutely not. But that is not what I see happening with charm.