The character promo images didn't interest me in TP: The Class Next Door so I haven't taken it for a spin. As I mentioned, it uses a similar but not the same setting, which is why I don't consider it as a continuation of Irredeemable's story. As for Meghan being in that other game, I have no idea, she's not featured in the main promo images.
Mainly I was mentioning it as the developer used the TP abbreviation, and mentioned his game in this thread at some point. As you say the 'teacher seducing students at school' trope is covered in a number of games.
So your observation is valid, just pointing out that I'm not disagreeing with you here.
As for Enthralled, my Enthralled story picks up pretty much where Meghan's story ends in Teacher's pets, but my continuation of her story takes a hard left as I introduce incest into her story... Enthralled is an unauthorized crossover comic, so I take liberties with a number of stories from different games. But I wouldn't consider it a 'direct' continuation of Teacher's Pets by any stretch of the imagination as Meg and her Dad leave town, and that school is never seen in Enthralled.
Also, while there may be a bit of comedy somewhere in Enthralled, I can't think of any at the moment, so that 'funny' angle that we had in Teacher's Pets isn't continued either in my silly crossover comic.
My two cents.