Apologies if I missed such iniciative, but does this situation not call for the pro community, to organise in some kind of an union? Then you could give guidelines to all others and those guidelines could not be ignored by event organizers.
As for Sabine's stand point - I think ...
We play T-Walsh and have accepted the fact, that we often can't find optimal diamond part score contract. It is a negative side of the system. We would bid 1NT with 1st hand and 2♣ with the 2nd.
We play supp X/XX, but not compulsory. We follow these rules:
Supp X/XX apply when the opening bid was 1 level, responder bids 1M, RHO bids below 2M. Even if these conditions are met, opener does NOT bid supp X/XX if:
- RHO bid 1NT
- another bid by ...