User blog comment:MrPervSan/The 'Not-So' Followed Meta/@comment-24.85.89.41-20130222113454

Lots of support champs already don't have heals. Honestly I think almost any champ can fill support just fine given the right mindset, as for the talon arguement you still need an ADC because even when shut down an ADC still carries a lot of dps, more than any other role and dps is more important than burst late game.

But, if high level play has proven anything you don't need the, mind me borrowing an MMO term here, the BiS for every role in the game because clearly not every single champion is going to come into play each match.

TL:DR Counters make the game, late game roles in teamfights are all that matter in team comp. Just building on what the OP said