Perhaps, I personally prefer Med Rates as you get the best of both worlds.
I would love to do a HR but wouldn't know where to begin with rates of 'rare' items etc.
To me a server just needs a good reward system in place for levels, rather than grinding from 33-40 to wear an armour, or 40-45 to wear an armour you may or may not get in a month.
There needs to be a lot more variety in items, across more levels, instead of gaps of 26 wep, then a 33 wep.
There could be common 26,29,31,33 weapons, then rare equivalents, so the 26 rare == 29 common stats etc. (or better)
I have the capacity to create a HR with caves that could span for aaageees, but i just dont have the confidence in delivering a HR server that people would want (as I have never properly played one myself)