Also not to mention if certain allagan pieces are needed in a good T5 setup then we need to have a moment of silence for the victims of bad RNG, like the 2 bards in my group that went 7 weeks with only one bard drop between the both of them, and when one of them left the static the next week 5/6 of the 1-4 drops were for bard.

This is why a single set should work, because it compensates for really freak RNG accidents.