I want the donger to be good so bad.

I feel like heimer could be in a good spot, just for the fact that he can fit so many roles. Unfortunately, he fits none of those roles well. Here are the arguments i see from heimer mains say when I tell them that heimer is not playable competitively

1. He has good objective control
2. He has good aoe damage
3. He can 1 shot carries with w ult
4. He has good zone control with turrents
5. His laning is good

While all these things are true, there are also champions that do all those jobs better. He has good objective control yes, but who in the meta has just as good if not better objective control for a mid laner? Azir. Now who has better aoe sustained magic damage? Azir, Cassiopeia, Who can one shot carries better? Every assassin ever, + lots of mages Who has better zones of control? Everyone, because heimer turrets are not durable And honestly, whose laning is better? Anyone that can kill not durable heimer turrets early on

Now, while I agree that heimer's ult is more versatile, He just doesn't fit any roles well enough to make him viable. I think that a few things need to happen to make heimer better.

1. Heimer turrets need to be more durable I think that early game, heimer turrets are in a good place. They aren't broken, but can dominate in certain lane match ups. They absolutely need to scale better, because then they would be more of a focus to the enemy if they engage you. I think that these could be a very good zoning tool, even in the late game, if they were more durable.
2. His w ult needs to have more spread when it's activated I think his w needs to be his aoe burst tool rather then a single target burst tool. He doesn't have fantastic aoe as it is in team fights, and this would make his w more applicable to his kit
3. His turrets should apply item affects (rylais, nashers, etc.) I have not done the math, so this could quite possibly be completely broken, but something needs to be done to give his turrets some utility. If he doesn't, then all they do is tickle really, and they can still be killed. They need to be more of a focus in team fights if 3 of them are their and not just melted or ignored.

I am all for giving azir the more damaging ap sustained damage carry, but if that's going to be the case, then you need to give heimer an edge over characters like cass and and azir, because both of these people do heimer's job better. I think that with heimer's current kit, he needs to have an advantage if

1. The enemy team engages on him with smart turret placement, giving him even more advantages in tower sieges and dragon/baron fights.
2. More utility even when his team engages, but not so that he would be more useful then an azir/cass
3. The option of having more aoe damage or an aoe stun (w or e)

I think that there are probably better things that could be done to heimer, but those are the things that I would recommend changing about him. Even if none of these ideas are good, I think that something needs to be done to give the biggest donger in league some love.