Yes, i give you that although i know and you know the way around it.The heads of quite a few 4.5 and 5.0mm screws will tend to pull through an 8mm hole in softwood (e.g. framing) - that just doesn't happen when you have a 7mm or smaller hole. 6.0mm screws are OK with the 8mm hole, but then the heads on those are pretty big. Screw head sizes vary a lot and it makes sense for me to not have to adjust plug sizes, etc for every task I undertake
For every other application there are no cons as far as i know.