I don't have much to add except that I don't like this 2♥ requires an A or K business. When I have enough to GF, I like to GF and not try to catch up later. I'd rather bid 2♥ rarely and reserve it for hands that actually are garbage, like a Q and a J maximum, since we're already using up so much bidding space as it is. When I was playing in the Red Ribbon pairs years ago, the opponents had some auction that was like 2♣ 2♥ (denying an A or K), 2♠ 6NT or something silly like that because she had 11 in Qs and Js. It seemed like a retarded auction back then, and my opinion about it hasn't changed. I recall seeing threads about responses to 2♣ recently, so I suspect some digging would turn up something useful.