The problem with some guys, because they're shooting CAT 11 or CAT111 approaches they intercept the glide at 3000 feet for instance, drop everything and reduce to approach speed in a flash, so I can imagine the controller's headache trying to bring the next airplane in for the approach when one guy flies minimum speed at 3000 feet while another one does from at 1500
Especially if it's a light B757 that suddenly slows to around 110 kts ground speed two miles outside the FAF and we have Twin Cessnas doing S-turns just to follow, forget the NG 737s......
I sometimes wonder which is worse to sequence behind, the 757 or T-37!