Should Heimerdinger have a different passive? His current one is uninteresting and invisible power
All he does is give bonus HP regen to nearby allied Champions and to his turrets. BORING. And it gives no meaningful improvements to his team, as health regen is only strong on particular Champions like
and anyone who builds
. Plus Riot has stated before that they hate auras because of how impossible they are to balance.
I personally think that Heimerdinger could use a new passive that actually creates interesting gameplay, not give free stats. Let's be honest - a small bonus to HP regen is NOT going to help you late-game.
What I think he should have is a passive that lets him interact with turrets and/or turret ruins in some way. He is "the builder", after all.