Fwiffo: My opinion is that we shouldn't change the rules for the existing game, but introduce a variant with the rules in force. This would be similar to the differences between Pente and Keryo Pente, where the rules are very similar but game play ends up being substantially different because of the rules differences. (Plus an added variant would have the benefit of allowing another #1 spot in the rankings to challenge Ugh for. LOL)
So my vote is for Fencer to introduce a new Tablut variant with these new rules incorporated.
(kaŝi) Se vi volas ludi kontraŭ ludanto de simila nivelo, vi povas difini intervalon de BKR ĉe invito al nova ludo. Tiukaze neniu kun BKR ekster tiu intervalo povos vidi/akcepti ĝin, (Katechka) (Montri ĉiujn konsilojn)