Unless map caps are increased (and perhaps even if they are), we really need an additional map, not an alternate map. With the influx of new players from Steam (also, and prior to that, folks that returned due to the expac/pending World Restructuring/etc.) the queues keep players from participating on Reset, or even random weeknights during prime-time. Not exactly conducive to keeping new or returning players coming back for more.
Either a 2nd map like EBG, or a modified EotM with war score implemented and instancing removed. Right now there is no benefit to a guild squad that can't get all their folks into maps moving their squad to EotM so they can play together - there are no fights, it's not really WvW, etc. That pretty much leaves scrims in the arena, which while fun for a short time, isn't the same as WvW. on Reset Night.
With the state of linked servers, where it's a crap shoot as to whether the server you're linked with is cooperative when it comes to trying to coordinate spreading squads out to fit onto maps, or whether they will just go with the "screw you" mentality and overload maps because they have multiple "map-queue" squads. Some links have to designate guilds to sit out Reset night, or play with a late start... this shouldn't even have to be a thing, if ANet put any real thought and effort into how to keep folks coming back for more when it comes to WvW. The guilds I've played with over the last 9 years have always been out there on Reset Night, and it's a BFD. Dampening that because of 1-2 hour-long queues making folks feel frustrated, left out, etc. because they can only get a portion of their squad into WvW.... is also not conducive to keeping players (or guilds) around.
Yes, Restructuring is coming, but who knows which year, and, c'mon... we need some love in WvW right now, and I don't mean nerfing builds. Folks need to be able to get their guild squads out into the Mists.