this all kind of links in with the requests to know why a post has been deleted, doesn't it? that wuld be a start, I htink, and the message could easily contain 'message deleted, and poster warned for XYZ'. yes, it might not work in the heat of the the moment, but it would be there for all to know and see.
tbh, I am not sure that MNHQ should back down on this - they have clear rules, and DBF has consistently flouted them (the TLES issue is a separate one, imo). she has had warnings, and temp bans beforenow, and they ahve not served to make her reconsider her posting style. to say 'oh she has toned it down' is perhaps not enough - just because her posts have recently been relatively milder, does not mean they have not still broken talk guidelines.
I posted on another thread re: reinstating DBF, and asked what percentage of members would be needed to agree in order to reinstate? because ths thread is only a (very vocal, admittedly) minority. shoudl MNHQ really be changing rules because of a few posters shouting?
all in all, the deletion policy (and by extension the banning policy) probably does need looking at - there have been several threads on this in the not too distant past. the consistency has not been there from MNHQ, across a number of topics.