First of all, GIB should adjust his ranges when there is a passed-hand double. In fact, there is no need for Leb or no Leb or anything here. 2♥, 2♠, 2NT, 3♣ should all be natural and they should be done on 99% of hands. If you passed on a 55 majors 10 count, fine, bid 3♦ over my double. Special hands with a major might want to bid 3M or 4M.
Second, what on Earth is this 2NT then 3♦ sequence? A cuebid for "my clubs" ??
Third, please don't complain about my bidding. It's really not the point. This should be a double that exists.