They had a crew base in TSV iirc before it was closed as the E170s were sold to DL's regional affiliates in the USA.I recall Virgin operated intra QLD back with the E170, a whole bunch of those Bonza like routes, they didn’t last long though. Perhaps a turboprop would be better but I recall the prop has high costs also.
I’ve got a VB boarding pass in the travel collection box in the shed, Cairns-Townsville E170. Would have been pre 2010.