IMO, default should be centered at Null Island (Lat/Lon 0) with a zoom to see the whole world.
PS: at the same time, could you remove the distance cap to see results when sorted by Distance (default)? For instance, from 0,0 we don’t even get 1 place result…we should always get the maximum entries (50? 100? right now?.. why not 250 default) from that center point.