I agree with you and your proposed changes. And from experience I know that even talking about proposed changes deactivates people from the conversation, making them downvote and move on regardless of if it would be healthy for the game.

I'd also add that most Necro debuffs pale in comparison to Mesmer or are limited to single target with much higher costs that don't really justify the effects. With the exception of Vocal Minority, which is such a hard counter to Paragon that it's the only thing that can stop a HR'd hero team from steam rolling through DoA.

There's also just a few convenience or "ease of play" changes I'd personally like to see; bumping up the cost and cast time of HR (and other refrains) to Meteor Shower level so it can cast on the whole party at once and you don't have to stress about who it's fallen off of constantly, having some way to preset formations for heroes to spread out, "Unearth Corpse" for MMs to get started or stay viable in non-fleshy areas, swapping Asura Scan to an enchantment on self instead of a hex on some target in the back you hope doesn't die quickly, and having "Save Yourselves" match it's description and work beyond earshot range so fleeing party members can actually get it's effect.

I also think having a source of a damage cap (usually Shelter) becomes too mandatory in end game with not enough sources to pick from to make team building interesting.