I'm probably one of the longest playing HRs in the game. Not the best, and not the deepest theorycrafter either. However, like most HRs, and to be honest everybody else too, I've been aware that since mod6 pretty much, HRs have been seriously underperforming in pvp and to a lesser extent, given equal item levels between classes, in pve too.
I'm also aware that given the complexity of the class mechanics - multiple dots, effects and twice the usual number of encounters - it must be every coder's nightmare to unentangle.
There've been a lot of threads debating fixes, usually with long lists of requirements which would entail a huge amount of work, on the developers part, to implememt and troubleshoot. Real life practicalities become quickly prohobitive, when you compare the pressures to produce new content for the entire population of the game to the needs of what is now, a fairly small slice of the playerbase.
So, my simple, to my utterly inexperienced programmer-wise eyes anyway, suggestion is every week, along with the regular patch/maintainance, you add a 1000 base damage to every encounter and at-will HRs have. Reserve the right to stop, and back up a couple of 1000 if necessary when you feel, or more realistically the other classes screaming on the forum feel ☺, you have done enough to bring HRs back to a competitive level.
No idea what my toon is now.