I absolutely love mixed games and would beg an invite if I didn't live 1,200 miles away.
A few things I would note, I heavily recommend playing as many games as possible as limit games, it keeps players from getting crushed too badly when the completely over value a marginal hand which will happen often unless your players are always seeing dragons in the closet.
I think I saw the omaha/hold'em split game called SOHE? Around here we call the same game Texaha, it might be easier to remember.
And another drawmaha variant is playing the hole cards as a 2-7 hand with the board still being a high hand. Also to prevent possible reshuffles as much as possible I have always seen drawmaha played with a max draw of 3 cards.
For a single draw game w/o wilds try 2-7 NL, it really should have an ante (BB ante works) and open limping isn't allowed, you must open for at least a min raise. It is considered by many to be the best feel/playing the player type game out there for poker, and Phil Helmuth just won a bracelet in it so hopefully it becomes more popular.