Heh, CGs come as they come - the festival shows quite a few of those people are getting attention! Hyao is letting the artist draw fairly freely, so more is coming as it comes - but there's a steady influx of new pictures being included.
(Also remember, there won't be many CGs with scenes that involve the MC - the goal is to keep the MC's particular description up to the player, heh)
There are ways around the MC problem tho. For instance have the character in question for example Bernard, have a cg of him naked on the bed for his sex scene. You don't need to have the MC in the CG for a character to get one. You could also make the MC a see-through anon figure. Not ideal but it gets around the problem