There is something to be said for taking action with the East hand. East sees that the suits are splitting well for declarer and 7♥ looks to be a favorite to make. Bidding 7♠ gains if
a) 7♠x is cheaper than 7H (small win)
b) The opponents ...
It exactly happened what Ben and Jack described above. Both opponents were minimum. I had the north cards and thought that 3NT was likely to make with the cards favorably placed for the opponents, so I put them to the test.
That partner would bid 4♥ was beyond my ...
LHO: QJ9x AK9x Jxx Jx
RHO: AK10xx J8x Qx AKx
I led a heart and that shouldn't have been a success (declarer still managed to go down; as written above weak opponents).
However, I am quite convinced that a ♠ is the percentage lead.
I wouldn't even consider pass as being pessimistic. If 1NT showed something like (10)11-13, pass would be my choice as well.
Note that 10 or 11 counts are more likely than 12 or 13 counts.
And if partner accepts with a 12 count, you're probably not so ...
To a): the question is if there is any gain to play transfers compared to standard. If not, it's preferable to play standard
To c): I saw that one. That made me think that it's probably not so useful to play transfers over transfers.
I really like the idea of playing transfers in this position. Especially if you play often there is a good chance that it sticks quickly and it looks fun to play.
However, I wouldn't overdo it. My idea would be to play these transfers when the following applies: