Rhino 7 comes with a correct inverse square light attenuation, Enscape does support it but the intensity slider needs some calibration.
Right now the workable ranges of intensity seems to be around 0.001 and 0.015 which makes things difficult to work with.
Another request would be to add a support for IES lights in Rhino. I know it was already asked before but I feel it is an important feature. (Rhino has no intention of supporting it according to their team, they focus on a wide range of applications, not just architecture).