Excellent idea!
It would help substantially help in EWR-TPA on Monday morning flights and they often board First and all Elites together. Without a doubt a cattle call, since easily 40-50 of the passengers are Elites at busy travel times throughout the year. I've been dressed casual a few mornings and been pushed out of the way by that stampede. Granted I always feel a little better when I look back to see the guy that did it and he's in coach....
Const3 would love to be on those flights with no more than 20. Do they really exist? Certainly hasn't seemed that way on my flights the last couple of months! Recently had 28 other Platinum's ahead of me on a standby list out of Vegas, so god knows how many elites where on that flight.