I have mixed feelings about this, mainly because if you force a 7d to start off at 3d, they’ve got to “steal” 400 points from other dans on the system to crawl up to what their rank should be, so it introduces some rank deflation in the dan ranks
Of course letting a 5k start off at 6d artificially inflates the rank system too, which is equally as bad (perhaps even worse).
Taking suggestions on how to best solve this… what comes to mind immediately is to give dan players a higher number of provisional games when they set their rank, and introduce a ‘flag this player’ feature to enable folks to get a moderator to look at the player and potentially adjust their rank back down. This, coupled with something to protect against people creating new dan accounts whenever they get adjusted, is the best that comes to mind at the moment, though I don’t particularly like the high provisional game part of this suggestion because it limits their ability to participate in tournaments and ladders until they get their rank sorted out, which might take awhile.
Awhile back we were talking about the possibility of requiring new dans to solve some ~5k-1k tsumego or something of the sort, which I kind of like as well (though that requires us to have a good collection of those problems, which we don’t yet)… so that might be another option to introduce, but it’ll probably have to wait until we have a collection before we can introduce that feature if it’s something deemed to be a good idea.