I didn't even notice the trend until you pointed it out. I just had Inferior Five in mind because I've been commissioned to do clix mods of them. So far the only ones I've finished are The Blimp and Dumb Bunny (which, I think, was the original working title of The King of Queens. Or was that According To Jim?)

There was a guy once who threw pies at members of t a team of conscripted supervillians. He had an son who followed in his footsteps. That son joined a heroic team. That team had a crossover with a third team with a somewhat similar mission to both the team the son was on and the team of conscripted supervillians the father was on. For a short while, that third team was led by an elder statesman of the first super-hero team. He had a daughter who for a while joined perhaps the largest heroic team in the DCU.

Name all the teams.

C'mon, some parts of this are obvious!

The Blimp = King Of Queens,
Dumb Bunny = According To Jim,
Debbie Does Dallas = Little House On The Prairie,
Deep Throat = Mister Rogers Neighborhood,
Godzilla = Perry Mason,

That would be telling!

I'll tell you if you are right or wrong...

I would think that 2-3 of those teams would be very easy to name.

Suicide Squad, JSA, Checkmate, Legion of Super Heroes, Infinity Inc. Did I get any of them right? Am I on the right track?

A team of conscripted supervillains: the Suicide Squad.
Son's heroic team: the Outsiders.
Third "team": Checkmate.
First super-hero team: Justice Society of America.
Largest heroic team in the DCU: Justice League of America.

This set of answers assumes that I correctly remember Digger Harkness throwing pies at his fellow Squad members, that you mean "first super-hero team" in terms of chronology and not in terms of "first super-hero team mentioned in this question" and that your criteria for "largest" takes in all versions of the team over the years.

--wyld

In terms of membership, the All-Star Squadron is the largest. Check their entry in the Who's Who '87 Update if you don't believe me.