Sorry to hear that 9while9. We launched WPEC 8 years ago before all the awesome new responsive theme stuff came about and even before WP had any hooks and filters (back then WP advocated a thing called hacks - ewww long since gone).
Anyway we've almost got our core standards up to scratch and our next step will be to launch our theming / theme framework.
Very soon we will be releasing a new framework that is based off something a lot more more WordPressy then you'll find WooCommerce canvas based themes. I can't say what it is just yet... but its going to be good :)
Either way I wish you well with your future sites and I hope you'll stick around and look at our new theme work when we push it live.