I aswell, am one of the players who came during the 7x event. It was a well timed escape from abomination that was lagstalrius.
But, I am very much against a second exp event. For one, it would drive an even bigger wedge between K1 and K2, along with a lot of the vanilla community.
But you're in a completely different situation now, you have the players; but they are separated into different servers. Wanting to provide K2 players with an equal experience that K1 had is a perfectly fair point, and I think while a lot of K1 players, myself included, would love for a merge to happen tomorrow, we could wait until the first quarter of 2017 when K2 has caught up in terms of content.
As long as we have something to look forward too and we know that progress is being made, and with Naxxramas also hopefully being available shortly after, that would probably create some hype on it's own.
Another thing that has been talked about in the thread would be announcing the possiblity of transferring characters over to your TBC server, Ares. As someone already said, this has never been done before and would almost certainly draw a big amount of people.
On a different note; this thread itself is a very big part as too why Twinstar are keeping me as a player. Communicating with their players unlike most other big projects, thank you for that.