I managed to attend the last two conventions, which were a blast. Pre-Katrina it would have been likely and had they moved thre location post-Katrina as well. I just don't feel comfortable heading down there.
I might pick up a homefront package if the set is actually cool. I'm hoping it's not repaints of bludd and rock/range vipers. Overlord is cool and I hope it's the original mold with some better paint aps and colours.
As for the extras, I'm sure MC will have leftovers after the convention. So no need to panick and head to ebay. The reason being that in my opinion is that the joe community is shrinking as many people are jumping off the bandwagon and not many new people are coming into the hobby. Also, they've had all the extras available for the last two years (and still do on MC) with the exception of the skyhawks, which by the way were too good of a deal to pass up (3 for $35) so many people picked up plenty.
I am going to miss that I'm not going to be able to meet up with the bunch of guys I've met the last two years. That was the best part of the con.