WesleyC, on 2016-April-25, 01:08, said:
That suggests to me that, if you are going to avoid missing a major suit fit, you will have to respond in a four-card major rather than a six-card minor with invitational values. That's not entirely unproblematic.
And of course the 2nt rebid is already problematic since you risk getting overboard if played as forcing, as defined in SAYC, or not knowing when to bid on if it's 12-14 and can be passed.