I'm getting sick and tired of arguments that go along the lines of "BM would be ___ unless ___". If you find a realm boring, move. If you find that realm boring, move again. Keep changing realms until you find one you like, or one willing to let you make changes. You can't make blanket statements about BM unless you've played in every realm on every island, which I'm guessing you haven't.
Ehm, that's not the point. Not one realm I'm in is boring, at all.
What I am saying is that there is a tendency, and it has been like that for years, to immediately resort to restricting and removing as soon as there is even just a hint of abuse, and in some cases that's necessary, but in many others, it is just spoiling the game for others.
It is often said that BM is a roleplaying and a strategy game but if you go about and interpret everything in the strictest sense possible and consider every other use of a feature abuse then you can just as well do away with the roleplaying aspect of BM because you're basically restricting the players' creativity. So leave a little room for various interpretations and uses of the features that are available, because freedom to do as you want (or at least explain the things you do as you want - within rational borders) is what makes BM great.
And I absolutely agree that using duels for swordfighting training is idiotic and abusive, but that does not mean that you have to do away with the feature completely because it can be used (and probably is being used) in
many other non-idiotic and non-abusive ways.
A much less drastic solution would be to just stop giving sword skill benefits from duels till surrender, nobody would miss a thing.