I am used to four suit transfers where we have the transfer to show minor single suiters and so 3♦ here would promise 4 spades, longer diamonds and game forcing, however, at the urging of partner we are playing minor suit stayman.
But now we need a way to show strong minor single suiters so 3♦ here doesn't promise 4 spades right?
How do you show this hand without missing a possible 4--4 spade fit?
3NT (which would promise 4 spades) seems unappealing.