I just played through the sequence in the grymforge where you kill true soul Nere.
I summoned the ogres from act 1 to help, and the gnomes ended up attacking them as they were attacking the dwarves. This was frustrating, and I replayed it a bunch of times to make sure the gnomes survived and weren't my enemies at the end of it.
A simple fix to this would be if you could persuade the gnomes (perhaps difficulty 20) to join you in fighting their masters when the time is right, so in the combat, they would be allied to you and not fight 3rd parties that you bring in.
I think this would add a little bit of flavour as well as complexity. In that fight, you'd also have to try and protect and heal the gnomes as with only 20hp they won't last long against the dwarves.
