a ) I play that 3rd/4th seat actions can be very light. In dubious auctions (say, the opps Dbl 2♣ or bid some kind of forcing) partner shouldn't bid potentially dangerous bids without a fit. At this vulrnerability I can bid 2♣ even with only: x xxx Qxxx KQJxx. b ) Another thing worth considering is - what should partner's continuations be after opponent's pass? I like this structure: 3♣ - courtesy raise with 3+♣, [6-9], 2NT - [10-11] balanced with (at least) good club tollerance, 2♠ - [9-11] with club fit, 2♥ - [8-11] with (5)6♥, not suitable for a weak-2, 2♦ - general asking bid with good hand, denying any of higher bids (usually with 4♥4♦ or 5+♦), usually F1 (except when partner is very light with 3+♦) Responses are: 2♥=4♥, 2♠=4♦ or extras w/o stopper, 2NT=extras with stopper, 3♣=6♣ minimum hand, 3♦=6♣4♦ very good hand... Do you like this idea?