Base Health Regen and Passive Change for Heimy

So, for Season 5, most items that increase health or mana regen have been changed to increase a champion's base stat by a percentage, e.i. Rejuvenation Bead 50% from 5 per 5 seconds. For me, I was looking around for information on whether or not this change included passives in some way. It seems that it doesn't, so with Heimy's astounding 0.6 per 5 at level 1, it makes base health regen percentage increases on him useless. Looking around today I found there's been some follow-up, Heimy's health regen has been "substantially increased", currently I can't find exact numbers. This buff to his health regen however comes at the cost of his passive benefiting himself. It's still Preseason testing and it's liable to change. On the surface, it's a decent buff for what Riot wants base stats to be in Season 5, yet it makes Heimy's passive relatively weak, his own lane sustain shouldn't suffer too much, but considering his passive won't be affecting anything else besides his turrets until mid game. I think the change is fine, but buffing Heimy's passive early would definitely be something to look into, as a follow-up to the follow-up. Just wondering what your guys' thoughts are on the preseason changes and maybe some ideas on Heimy.