The timings of the flights mean a lot of down time in BRS for the aircraft, perhaps a cheeky little FRA could fit in the middle, no aircraft makes money sat on the deck, take monday for example arriving back to BRS from ABZ at 1020 then not back out until 1640.
Lets say BRS-FRA departing 1100, arriving approx 1230, departing FRA-BRS 1330 arriving approx 1500, in plenty of time to operate the afternoon ABZ service at 1640.
Obviously not ideal times for Business goers to FRA but better than nothing and would connect with a lot of flights eastbound in the evenings I would expect
Just a thought
