I have a fairly large collection of 25mm figures, almost all more than 20 years old. While I don't paint minis anymore, I would love to add to my collection.
I prefer things that are "realistic" in proportion and scale, and have a more medieval than fantastical feel. I don't need more fighters with swords bigger than they are, nor female figures with breasts as large as watermelons, wearing chainmail bikinis.
Practical, useful figures that can represent a multitude of different characters. A robed and belted man or woman with bare feet and no weapon can be a monk, a rogue, a cleric, or even a wizard or druid with just a choice of paint job and accessories. Pose is secondary; just don't make it TOO awkward.
However, I think I am distinctly in the minority, so I'm not sure you should listen to me...