I'm trying to figure out why this happened. This 2 races got nothing in return for these nerfs and I don't really think it was needed.
Among other things i play health regen build, and honestly dont think its that OP. It has its counters now and you have to sacrifice a lot to achieve really high regen, but than your other stats are really on low side. If you go for mediocre regen (you are tanky but not that much) all your other stats would also be mediocre.
Its a build where you have to find that sweet spot between health regen, dmg and stam or magicka regen. And be good at sustaining yourself . Really don't think it deserved nerf since its not really "I have high regen nobody can touch me build".
If orc and nord got something else useful for pvp I would be fine, but its not the case so I ask you zeni to reconsider.