Here's my 7 stage starter list. The only thing arguably missing is Duck Hunt, which is almost certainly deserving of a spot, but no more than any of the other stages.
Battlefield
Smashville
Final Destination/Omega Stages
Lylat Cruise
Town and City
Skyloft
Kongo Jungle 64
I think we need to re-assess the way we are handling Omegas...
The shear number of variants that CAN affect the match outcome/gameplay (walled, unwalled, or thin stages; un-walljumpable walls; cutouts; grass traction; etc) are fairly staggering.
I would say one of the following is the "correct" way to handle them.
1. Decide on 1 legal omega stage to use as FD (we don't actually have to use FD this time if the effects are a bit much)
2. Separate the stages into their subsets... where all stages in that subset (walled, walljumpable, etc) are the same (or the same type). Then strike the subsets if somebody CPs FD and let the winner choose their preference
3. Allow a handful of legal Omegas and let the CPer choose between them.
2 is probably the most complicated but also allows the most stage variety. 1 is the simplist with no variety. 3 is a decent compromise.
This takes a bloody long time so I'm hoping everyone will just Gentleman to Palutena's, but here's the most neutral way to decide which Omega stage to go to for game 1 (does not apply to CPs). I'm of the opinion that banning/striking FD = banning/striking all omegas.
3. The Omega Stage Rule: In the event that the Stage selected through Game One Stage Striking is Final Destination/Omega Stage and players are unable to agree on which stage, the Stage Striking Procedure is repeated with the Omega Stages List in a 1-2-2-2-1 fashion beginning with the Player who struck second in the initial striking procedure. If Final Destination/Omega Stage is selected as a Counterpick by the player who lost the previous match they may select any Omega Stage they wish.
Omega Stage List (9) - Information
Garden of Hope - Straight walls down to the bottom blast zone
Luigi's Mansion - Indented walls under stage
Bridge of Eldin - Wall is comprised of 2 straight walls above and below a curved guiding lip
Kalos Pokemon League - Guiding lip guides recoveries to ledge
Mario Circuit (Brawl) - Floating stage, Small guiding lip, limited wall jump area
Norfair - Floating stage, moderate guiding lip
Temple - Floating stage, flat wall above narrow guiding lip
Lylat Cruise - Floating stage, no guiding lip, no wall cling/jump
Final Destination/Omega Palutena's - Floating, large guiding lip, wall jump and cling
(taken from my proposed ruleset and
this thread)