2nm diameter blip at 35nm?? That would explain a few things.
For a start it means that a functioning GPS will be far more accurate than a radar. I recall Irv Lee doing an article for one of the UK flying rags a few years back, where they flew around somebody's CAS and got them to check the accuracy of their GPS. Seems a completely pointless exercise to me, if the radar resolution is that poor. A functioning GPS will be about 100x more accurate than a radar, around the edges of the average Class D zone and assuming the radar head in the middle of it.
I wonder how accurate the resulting radar tape would be. The one which the DGAC used to go after me showed me only a few hundred metres inside the TRA. Funnily enough I was under a squawk at the time, a sort of "FIS with radar" which has since become common in France for VFR traffic.