He's basically saying that when it comes to adding the characters, you either copy-paste them "as is" from a previous panel (and it shows) or you seem to make them from scratch altogether whenever the pose changes (and it takes time). You would save time and add more variation if you saved a blank template for each major character where you can quickly add the appendages in various motions and different expressions, and then bam! add to the panel. *
But I do just have templates for them that I repose and such. The only thing I didn't do that for was Alcina in the first Panel of Comic 1, and that's because I made that Ages ago.
And what's the point of changing them, if they simply don't need changed.