Let's say we'd get more skills - How would you handle them?

[Sylvain]

For me, it could be a problem to see exactly where you are in a combo chain.

The easiest solution would to put each combo on a single key. So, for PLD :
1>2>3 would be 1>1>1
1>4>5 would be 2>2>2
1>2>6 would be 3>3>3.

Well at this point there is no real "combo" anymore. (Not that I would mind I don't like the combo mechanic)
But I believe that people who like the combo system enjoy the whole skill-chain.
If your 3 combo are either 111 222 and 333 you've no more chain...