You guys don't think that the majority race 2 or more class's ?
Taking an optimistic view on this, if a guy usually races two vintage class's on Saturday (I do), and then 2 class's on Sunday (I do), you are going to line up on the gate 6 times on Saturday and 6 times on Sunday. And the single minded obsessed moto-maniac that races 3 classes might as well park his rig at the gate staging area cause that's where he'll be all day.
And for those of us that race the Cross Country on Friday, that is 1, 2 or 3 more opportunities to race his machines at 45+ minutes per scramble.
You certainly are not gonna be able to complain about "not enough seat time", for the long day you spent at the track. And for many people that Nancy and I have met at Mid-Ohio, Vintage Days is their only V/PV race's of the year, saving it all up for that weekend.
I absolutely won't complain about the 3-moto format, which is a rarity these days it seems. (actually this will be my first). My only complaint will be that Vintage Days isn't a week long 7 day event so that we can take it all in without being speedwalkers trying to cram it all in over 2-1/2 days. (which will be even harder now).
I'm sure there are many who only come in for just a single day's racing and then go home, but from my perspective the majority are getting more bang for their buck. If you get some really good battles brewing between racers this could make for an exciting weekend and plenty of benchracing and bragging to follow down the road.
Another benefit is you will only have hang out for one MX award ceremony...on Sunday.