Fake regionalist. It's becoming more and more clear regional rights is a brand name, and not a genuine ideology, as you only seem to support the "rights" of the regions that you like.
Marokai, you should know this by now: Regionalists only support regional rights when they want to. It simply depends on the issue. If it's an issue they don't want, they'll fall back on saying it should be "up to the regions". I can't think why regionalists don't support this bill, which would give regions even more power.
But it would be the power to delude their power which would seem rather counter productive to a regionalist. To a regionalist an ideal Senate would be all regional. Under this it would have created the opportunity, not that the regions would necessarily take it, but still the opportunity for an all at-large Senate.
And as for the idea of making elections more exciting, I'll reiterate what has already been said, don't try and fix what isn't broken.