Sidelight: do I have 2-suited overcalls to suggest not that other major? Should they then be introduced especially for this problem? Those limit the top of T/O double.
Yes, I see a risk in 3C with partner backed into my weak 6xD. But, I do have H-Qx, a good 4xC, SA single, how will partner picture this much with his H-AKxxxx? H-AKxxx?
Does partner expect 5xS if I try 4S? Ie 6D 5S? Or 4S = 6D 4xS and big offense hand? I always open 5xS, so only 4xS is possible, and 5D clear if no 3+S. No C interest possible. How could partner distinguish this 6Dsolid4xS with at most DA likely DT from semi-bal 18 if I double?
Is 'sandwich 1NT' on by passed hand to get in with distributional 2 suiter unbids? Not if poster is asking. Why not? I rather like 2C here as where I live, cannot support S or D lead. Maybe 3C plays.
Absolutely! Why on earth did partner choose the Q-bid? Not raise, jump raise, new suit force, 2N,3N nat/art, X to follow strong? Could he have been stuck with DT and good support? AND intended that message?
Might I step into a forcing pass invite to slam with 0-1xS and good controls that gets accepted and 6H makes? Naw, 5S-x is surely cheap --just not as cheap as 4S-x.
To a game-try double, South has D-single for a D-ruff, likely C-K for a trick, plus a 5-suit headed by Q? And this is too little?! Could the 2H over 2D be S-Qx, H-xxx, D-xxx, C-Qxxx? or similar such garbage?
What consideration for weak 1N has pre-planned scrambles. Now X is penalty AND X of pre-scramble is penalty AND know to sit for 2C-X when D-xxxxx C-QJxxxx with a few D-ruffs from 1N opener = DISASTER double game swing.