Think of it this way – what if they wanted Hook and Colin had somehow been…lackluster? (Ok let’s say that actually they just cast someone else by mistake cause Colin is perfect as Hook and of course didn’t mess it up! After all he was told going in that there was a bit of PB in him and he even did the voice in 2×04 – it was always part of his character to be compared to Westley/DPR!) So let’s say that whoever was in his place failed MISERABLY and they were dreadful together but he was already introduced as Captain Hook so that was just over and done with, shall we?
They pretty much said as much on the DVD commentary of 2×21/22 (I can’t remember which one) saying that if Colin wasn’t as good as he was, they wouldn’t have gone down the path they wanted.
And now for internet blackout until I get a chance to watch today’s ep. Have fun guys! 😀
If one is to engage with the primordial forces of darkness, one must expect a little social awkwardness