As it stands there are currently numerous situations in which it can be tactically beneficial for players to get themselves killed. The most obvious of these is when the youngest vampire in Dracula's Palace gets caught and jailed. Others include an outed VIP with no protection, as well as the Classic/RP scenario of the sole surviving mafia killer getting caught.
In DP (and also VIP mode to some extent), the meta has largely shifted to the expectation that people caught in such a situation will leave for the benefit of their team. Since such leaving is technically gamethrowing and practically cheating, this rewards rule-breakers with a massive in-game advantage. This is only exacerbated by the fact that leaving is now non-punished as long as the leaver doesn't say anything.
There are a few possible solutions to this problem. One would be to harshly punish people who leave in these situations. Another would be to rework the affected modes such that these situations no longer came up. I don't think BMG has the mind or the will to do either of these things, since they would both require actual effort. That is why I am proposing that their should be an in-game suicide option (separate from the general option to leave which should be gotten rid of anyway). Players who use this ability should remain in the game (and keep their wincon) while having access to all public game info (and only public game info, to avoid this being used as an avenue for cheating that would not otherwise be possible). They should not be able to communicate with other players in any way. And just like leaver-suicides, in-game suicides *should* be delayed until the next end-of-night. Also, obviously, use of this feature without valid reason should be treated as gamethrowing.
This seems to be the only practically feasible way to put rule-following players back on a level footing with existing tactical leavers.