There has been progressively more interest in this subject and other downwash issues at the ICAR Air Commission and related matters appear to be cropping up locally.
IIRC, at the 2012 Congress, someone came up with a map of downwash for a Boeing chinook and questions were asked about whether such maps existed for other types and what we could learn from these especially for any type of HEC/HHO ops.
At the 2022 Congress, there were several presentations (4 territories) about rescue of canopy sports casualties (paragliders, base jumpers and so on) including the problem of the persistence and complexity of wake turbulance around a possibly unrestrained canopy and also a presentation about mapping of downwash effects below an aircraft during hoisting ops. The knowledge base has clearly expanded hugely during the last decade. We need to not just keep up but be aware that a lot of others are still not keeping up!
Locally, ATC have started to push back against training involving hovering on an airfield. A typical location is about 150m from the main runway. Having a super-medium rotorcraft hovering 150m from a runway used by light GA through to small and medium sized airliners, with the prevailing wind scattering the effects along the entire length of the runway, might not be a good idea.