this fix nothing, the problem with heimd is not with hes ulti but with turrets power/survivability/quantity alot of bugged skills against them like Rupture or singed throw doesnt work at all etc.

The only fix they turrets need is to provide gold and XP for killing them that scales based on the turrets' levels, and either an MR reduction or health reduction.

Since turrets are essentially extra minions, they should give the same rewards for killing them.

Make the turrets firing arc directional to a 45 degree angle. That way we can flank them.

I like that idea! Make Heimerdinger choose the facing of his turrets and restrict their firing arc so that they can be flanked.

That is a brilliant idea, sir.

neither of your "fixes" addresses the problem that the turrets are seen as "too survivable" and makes games last too long, an opinion with which i personally disagree.

your turret pickup idea is moot since heimerdinger's turrets are limited to 6 and remove an existing turret when casting if 6 are available. the only circumstance in which i believe this might be effective would be if heimer would be unable to plant turrets when he reached the max, but that's a broken idea since it severely limits his mobility and effectiveness. the second idea just addresses a buff to what the turrets already do (upgrades dmg and armor per 7 shots) but basically removes his ult and tacks it on top of that property of turrets.

I do however like the idea of making turrets have directional fire, although 45% is pretty damn narrow, it's smaller than the cone of cho'gath's scream. somewhere around 180 degrees makes a bit more sense because you could still flank them and they would still be effective at covering a large area, which they are obviously meant to do. thumbs up for directional fire.

How about adding a radius to a turret in which it's not possible to build another turret?

Here's a simple idea: make the cooldown on placing a turret longer (somewhere in the area of a minute, maybe?).