So I suggested this to MF here: http://forum.makingfun.com/showthread.php?5288-Full-kingdom-Veto-mode-for-Pro-games&p=27786#post27786
There have been lots of arguments about specific-card veto on these forums, and my general issue with iso-style veto and its variants, as well as DXV's hate-list idea, is that I think they'll lead to de-facto banning of a few widely disliked cards, when really, like everything else, the degree to which a card makes the game less fun depends on the rest of the kingdom. So my suggestion is rather than specific card hate, you can only veto a whole kingdom. So in Pro games, one player can offer "Let's play a different kingdom" on their first turn, and if all opponents accept, a new kingdom is generated and we act like the vetoed game never happened.
Sorry if this has been suggested before, but I'm curious what people think of it.
Hm, does it pick a new random starting player, or the same one? There are problems either way: if you keep the same first player, then in a boring kingdom with strong first-player advantage, P1 may be reluctant to reroll it, because you might get an interesting kingdom without a strong advantage. If you choose a new starting player, P1 will probably be reluctant on any kingdom at all. On the other hand, that at least implements a lower-overhead way to choose a starting player, for tournaments and the like, so I'd be more in favor of that scheme even though it would get used less often for your proposed purpose.
There's a similar problem with 5/2 openings: if I have a 5/2 opening on an Ambassador board, I am desperate for a reroll even if the kingdom is interesting; my opponent might offer a reroll because he doesn't like Ambassador, but would choose not to if he knew how far ahead he is even before a single card is played.
Arguably both of these are a "misuse" of the feature, because my imaginary players are using it for competitive advantage instead of to avoid boring kingdoms. But of course that will happen: Pro is for competitive play, and if a new feature is introduced that can influence a game this dramatically, players will find ways to use it for competitive advantage.
Edit: Actually this is a kinda funny Prisoner's Dilemma, isn't it? Supposing that this feature exists, players can choose to use it either to gain competitive advantage, or to play more fun kingdoms. If both players aim for more fun kingdoms (cooperate), they both have a better time, and the competitive playing field is still even. But if one aims for competitive advantage (defect), they get more wins
and more fun kingdoms (because their opponent is mostly rerolling on boring kingdoms). If both players defect, you get a game that's just as competitively fair as both-cooperate, but less fun. Neat.