Energy Talon
1st off, he fits into the same assassin category as Katarina, Zed and Akali, who are all energy champions, yet he has a small mana pool of 330, letting him cast his poke 5 times, before he's bullied out of lane because he's out of mana.
He's too squishy to go head to head with fighters (the meta top lane), and now without his silence, he doesn't really get far against mid lane champs early phase.
The only real success I see with Talon now is in jungling and of course he needs the blue buff to do it.
Problem is, even when I'm playing "smart" against mid lane champions, by the time I poke them down with my W enough to dive in with my E, he doesn't have enough mana left to combo into ult. I shouldn't have to waste gold on mana pots cause he can't cast his W more than 5 times before his mana pool is drained.
Don't get me wrong, late game Talon is a monster! I destroy whole teams caught by my W and E if they're close enough to the target I proc Q > E > W > R.
I understand that as an assassin you have to be able to commit, but how does that apply to the other assassins?
Akali has her smoke cloud to get away. Lee Sin has his dash/shield/lifesteal. Zed has two clones to fall back to. Katarina has teleport. Fizz has untargetable jump. Kass has rift walk. LeBlanc has double flash (triple flash if you actually take the flash summoner spell). Kha'zix has leap and dual/triple invisibility with increased movement speed. Master Yi has extreme damage reduction, immunity to CC and psycho speed boost to run in, kill and run away. Nidalee can leap away with increased movement speed. Nocturne can block with shield, cast dusk trail for escaping, and fear the biggest threat to him after his assassination. Shaco can cloak with increased movement speed. Evelynn breaks free of CC and gets high speed getaway. Rengar's battle roar gives him a large amount of armor and magic resist, which is going to be at full ferocity cause he's going to use hit ult to find the squishy ADC or enemy assassin which will be enough to let him make it back to his team in a team fight.
That leaves us with Talon. Who's only escape option is his R, so hopefully he kills his target on the outgoing blades, since he's going to escape before they return to him. No health sustain, no bonus armor or magic resist, no mobility move to escape, no speed burst, no dash, no way to fight CC, no smoke cloud or blind, no shield, no damage reduction, NO SILENCE and to add insult to injury... A SMALL MANA POOL
At the very least you can make him an energy champion.