good low 7s to low/mid 8s in the jura preferably in the South.
I take it these are French 7s and 8s and not UIAA as used by the locals?
Beyond my level of personal experience grade-wise in that case, but just down the road from Roter Fels is Ankatal Südwand, which has classic 7s on it and looks very impressive in a most untypical way for Frankenjura: vertical crimping with no pockets.
Edelsteine is quite cool in a rather more typical short punchy pocket-pulling style, although my attempts to climb there have been hindered by the fact that it seems to dry rather slowly, being deep in the woods, even though it it south facing.
People also seem to like Gotthardskirche, although it too is deep in the woods and my attempt to climb
there was thwarted by complete failure to find it. Take a GPS.
You could also have a look at this
big list of Franken favourites