It's almost time for that new patch smell

Many people have hopes and dreams for the next patch and rounds of balances. The big ones that come to mind are:
- Reworking buybacks interaction with reliable gold, experience, and the comeback mechanics and
- Balancing some of pub stars: Troll, Juggernaut, Lion, Sniper, and Axe come quickly to mind.
Outside of those two things glaring straight at The International, DOTA2 is in a good place. The support hero pool is large and diverse. www.DOTABuff.com just ran a three part series highlighting 10 of the most viable supports you can pick (you can find part 3 here: http://www.dotabuff.com/blog/2015-04-02-introducing-top-tier-supports--part-3). To that list I would add the Ogre Magi, Treant Protector, and Sand King. There are only a few heroes considered unplayable (Sorry Kunkka). The mid lane is seeing a Rock- Paper-Scissors-Hammer-Blade-Scream… between Shadow Fiend, Sniper, Storm Spirit, your magic nuker of choice (usually Lina or Queen of Pain) and the maverick picks ( Ember Spirit, Brewmaster, Magnus, Viper, and even Artzeey on the Razor). With that said, there are still somethings that need fixing so here’s my wish list.
There are a few abilities that need to receive minor nerfs. Sniper’s shrapnel is crazy good at 50 mana and a 40 second recharge rate. Either the mana cost needs to increase enough to where you actually have to consider the cost of casting it, the recharge rate should be increased, or a combination of the 2. I don’t think it’s that far off from being viable but not overpowered. The other ability that stands out is Lion’s Impale. This spell is targeted so as long as you reach the cast point, the stun will land unless they are super far away. This leads to some stuns that are a bit on the questionable side. The solution here is to either have it remain targeted but once you cast it, it goes a fixed distance in the direction of the target or make it a skill shot but increase its range a little. The trend has been to make things more skill intensive; think Fissure for the Earth Shaker or Impale for Nyx.
A few heroes would really benefit from a bump because they are narrowly situational, they are a worse something else, or they are just unplayable. Visage best fits the narrowly situational pick because you almost never see him without a Drow or another pushing hero. Chen has pushed out almost every other pushing hero except for the Enigma. The buff to his abilities is a welcome change, however now the situation exists where Enchantress is a worse something else. Maybe she needs a rework to compete like buffing the damage her creeps have or increasing her healing effectiveness. Finally, the unplayable heroes: Kunka, Alchemist, Leshrac, Chaos Knight and Lifestealer just cannot be picked because they are situationally worse than everything else. A buff to these heroes would be welcome, especially Leshrac. He puts out a ton of damage, but has to compete with QoP, Lina, and Storm for the position of mid int. hero and he can’t. He’s also not a good support because he damage is reliant on being alive for the duration of a fight. A buff in either direction would be most welcome and I think it starts with Lightning Storm.
Hopefully the next patch freshens up the current meta, bringing new heroes to prominence and pushing down some of the current stars. What are your picks for heroes that need nerfs? Buffs? Let me know in the Comments.