or example, at Ballina we have Class G all the way down to the runway. At the present time, airline pilots depart Ballina in VMC simply receiving traffic information on other IFR aircraft.
AND making NUMEROUS CTAF broadcasts, maintaining a vigorous listening watch, monitoring TCAS,
and keeping our eyes peeled.
Local traffic there has a pretty good awareness of the RPT ops, and generally keeps clear when RPT arrives. Itinerant aircraft are a problem, but usually ATC will give some sort of traffic info on anything that paints.
“oh, we can’t climb in E receiving a traffic information service because that’s dangerous”
No, we'd say we can't enter it until we have a clearance.
Even though we make VMC departures, we fly under the IFR - and we are
EXPRESSLY FORBIDDEN to depart VFR and get an 'IFR Pickup'.
In all honesty, I don't recall being denied a clearance into CTA. It's usually given on the departure or airborne call. And believe me, we go balls to the wall Vert Speed to get out of the CTAF-R and into CTA.
If we don't get that clearance, we stooge around, cranking our necks out the window like Meerkats, flying up against the bottom CTA, above our LSALT's trying to 'See & Avoid'

. No one intentionally flies below LSALTs.
Mixing jets with ultralights in CTAFs, Class G - absolutely blows, frankly.