I like the idea of running mixed games and would definintly show up for one should you host, and would hope that people would show if I did. I've done mixed games before and it works well, providing everyone knows what they are showing up for.
My thought would be to keep the mixed game out of the tourney and do a two table tourney event. As the tourney got down to one table, open the other table, as a cash NL Hold'em game. Then when the tourney was over, open the second table as a mixed game.
My vote for a mixed game night would be Hold'em, Omaha Hi, and 7CS. I'd skip Razz and Lowball.
My thought would be to keep the mixed game out of the tourney and do a two table tourney event. As the tourney got down to one table, open the other table, as a cash NL Hold'em game. Then when the tourney was over, open the second table as a mixed game.
My vote for a mixed game night would be Hold'em, Omaha Hi, and 7CS. I'd skip Razz and Lowball.