I voted for everything for leagues which I didn't join for reasons different than just shards, and definitely voted no for just about everything else.
In fact, I would for any event I would ever attend, the shards in their current form are just not balanced. It's not that they can't be countered, just that a single one can make or break an entire match. I don't like them or their impact on deckchoices, so prefer seeing them banned anywhere where possible. The one true unrestricted pvp: pvp2, shall always be there (I hope) for anyone to play any card.
For individual pvp Events... I think they can be allowed and voted yes, as long as they are generally banned and only left unbanned when there is a very good (thematic) reason.