As usual the bid, if correct, is forbidden. Here 5♥ was chosen and could easily be wrong. Nothing with the BIT suggested 5♥ over X. But of course here 5♥ were right and it was corrected to 4♠X!?!. If X would be chosen and that was ...
I dont play this myself but I saw an idea above where you bid 3♦ transfer then 3♠ with 4♠5♥ and you bid 3♠ directly with 5♠4♥. Not optimal for rightsiding and not optimal for minors
If you always anwser 3♦ to 3♣, then responder can say:
3♥: 4♠
3♠: 4♥
3NT: both majors
Now we have concealed the opener distribution (except if he have 4card support in the shown major(s) ofcourse)
Hi Craig, this sounds interesting. What is the rest of your system? normal stayman or puppet? How are you showing slam interest with one long minor? 4m? Would love to hear the rest of the system.