The good: timing into DFW for onward East Coast connections (compared to QF's abysmally timed QF15; USCBP at DFW rather than LAX; AA hard product (compared to QF); return leg, DFW as an airport and AA FF lounge are excellent compared to LAX. Also a half-decent option to some European destinations with reward seats as opposed to lack of availability via SIN (I'm looking at you QF).
The mediocre: AA soft product
The (likely) bad: seasonal and propped up due to QLD Govt (possible it only lasts one season); expensive fares (similar to SYD/MEL-DFW); no F lounge at BNE or even anything remotely premium for what will likely be a premium route.
As someone who is about to do BNE-SYD-LAX-MIA, if a BNE-DFW on a OW carrier was available, even if a little extra cost, I probably would have jumped on it (it is a personal-paid holiday with family, so costs were a factor hence no SYD/MEL-MIA via DFW as it was insanely expensive). Current BNE-LAX timed flights ruled out those as options to connect.
Went through DFW on entry to US a few months ago (albeit, from Europe) and CBP was a breeze compared to LAX. Through in 10mins compared to the hour and bit last time through LAX.
Let's hope some more international love for BNE (ORD??) from QF/AA other OW airlines to warrent a decent QF/OW lounge. They did a great job in the domestic terminal, it is a shame Int hasn't kept up. Maybe they are waiting for the new airport terminal build before spending cash.