NI-MH battery monitor design. Any obvious errors?
It looks pretty good, but there're a couple issues I can see.

One downside is you're just about doubling the current by using a 470 ohm pot for the detection part. I don't know how long you expect to have this circuit attached after the battery reaches the threshold for the red to turn on, but this circuit could excessively drain your batteries if you don't unplug it or charge it soon after seeing the red-light.

You should also make sure you're very careful when setting up/tuning your circuit. 1.2V * 6 = 7.2 which is higher than what this chip is rated for. I know you can get slightly higher than that with NiMH's so start at the low side when you're tuning the pot and work your way up. Another option is to add a resistor between the pot and the IC along with a 7V zener diode in parallel with the IC to protect it. Alternately, a higher Vdd IC could be sought.