Please Make Players Immune To Heavy When Mounted

[Atreides]

I really think that it's not heavy itself that is annoying. It's the fact that 99.8% of the time, heavy doesn't cause anyone to die.

How about this:
1)If a single mob casts heavy, the same mob can't cast it again for 30 seconds, but also duration is now 30 seconds.
2)Heavy can stack.
3)Heavy causes you to take more damage, increasing with each application.

Heavy actually isn't a cast, any attack can apply heavy on you while you're mounted, they can even autohit you and apply heavy that way.
I do think that they could do something with #3 I like it.
Instead of heavy they should just apply a debuff which stacks while mounted and each stack increasing the damage dealth to you by 20%, you'd think twice to just ride past a horde of mobs and it would actually bring danger back.
The debuff should apply with every hit you recieve while mounted and last 1 minute, heavy should be removed or nerfed though.