HELP MY HORSEY!

I'm writing this because I feel like my pony boy Hecarim is in a bad spot right now. I love playing this guy but in the current meta he feel very underwhelming. He walks a tightrope between tank and bruiser, but he doesn't do either of those jobs very well. The exception being if you are able to snag some early kills then he's alright, but then you're taking away from your team. I don't play him as much because every time I fight with him, i end up going "WTF IS THAT DAMAGE?!?" I understand he got a tiny buff to his W, but most of the time you can't even tell it's active unless your jungle clearing. But in a teamfight where every has heal reductions it's next to worthless. Maybe it's my build but I try to go tanky with him, maybe picking up a sterak's gage. His ult literally forces him to be that back line diver type of dude, but he gets instant nuked. His passive leaves much to be desired as well. The extra damage from movement speed on his passive is SUPER tiny. With hecarim's skill kit I just feel like someone who charges into the fray would be a little more durable. I've tried many different rune combinations to try to shore up the difference, but against other junglers like lee sin, khazix, rengar, kayn, skarner, jax or vi he just gets destroyed.