.....Though I'd rather not touch your various negative/bleaknik/derisive polls with a 10-foot pole, this is one I feel obliged to answer simply because I do houserule a lot.
My players generally love my houserules. Most of them exist only to make the game more interesting and fun; some just clarify rules matters though, and some are purely flavor-related. Like the tweaks to core races for Rhunaria or Aurelia, most of which is cosmetic.
Many of my houserules are purely developed from questions and requests of players, who wanted a particular flavor or fighting style or the like for their character; that's where my sorcerer variants for Rhunaria, addition of a Samurai feat equivalent to W. Spec. for daisho swords but a bit weaker, revised planetouched races as templates for Rhunaria, and other houserules have come from. I devise and design to fit my players' PC concepts when needed, so they can enjoy whatever cool ideas they come up with; but I'm still the one who hammers out the designs and bearer of the Uber DM Hammer of Absolute Judgment.
Feliex enjoys the extra bennies I've given Fighters in Rhunaria, and likes the couple of things I gave Samurai too, since he plays one (Kai Isawa) in the side-campaign we've run lately. Donovan appreciates the extra feats his Sorcerer gets and the improvements I made to Dragon Disciples, since he's heading for that PrC; his side-campaign PC is Gabr'el the druid and recently gained access to 2nd-level spells, including the couple of new ones I've added for Rhunaria. My Rhunaria houserule for humans getting a free re-roll once per day (for attacks, saves, and skill checks) has been quite welcome.
I abandon any houserule I think about implementing if the players object to it, like when I decided I should finally solidify some houserule for slowing down level advancement in Rhunaria past level 5 (just a bit slowed then, on to moderately slowed past 10th, then very slowed past 15th), to better emphasize and reinforce the rarity and difficulty of individuals growing so phenomenally powerful beyond the norm. But I got objections when I mentioned working on it, so I just tossed that idea out the window. So while NPCs beyond low-level remain uncommon (the PCs have only ever met 4-6 NPCs higher than 10th, and about the same number of NPCs between 6th and 10th; the PCs have traveled through parts of half the known territories in Rhunaria, dealing with several important folks), the PCs continue to advance normally in XP and levels. And that's why I have the conundrum of a 14-year-old spirit sorcerer in the main Rhunaria campaign who's already 11th-level just because he's been adventuring a lot. -_-