The economy configuration that UA traditionally used on the US-AU route had two bulkhead/exit rows, 35 and 46, adjacent to the front toilets and to the galley respectively. I found that the leg room iin those rows (at least in the B/C/H/J seats) more than compensated for any inconvenience of location, but I also actually liked to be close to the bathroom for the quick preemptive assault when it was needed.