Obviously Honey Select, Artificial Academy by Illusion. Would also like to see older Illusion titles like Schoolmate.
Honoo no Haramase series by SQUEEZ
Any of the Boin (preferably
Hime to Boin) series by G.J? (Good.Job?) (Artist Sano Toshihide)
Oppai no Ouja 48 by OLE-M (Artist Mochizuki Nozomu)
Saimin Class (and
sequel) by OLE-M (Artist Mochizuki Nozomu)
Sexfriend by CODEPINK (Artist Kiriyama Taichi) I'd say
Sweet Home as well but that's with JAST without updates in a while.