DMX a fool for this one
That substance had DMX questioning who was Obama .. "Barack??!!"
Basically called Yayo the U-God of G-Unit.
I'm not a super fan of Yayo, but now I want to listen to his catalog, because he does have his own tracks, lots of features and G-Unit verses.
But just like U-God he added his on distinctive flow and lyrics to the group.
So to answer the question, G-Unit was better to have Tony Yayo than not have him. Every member doesn't have to be amazing, sometimes you need one member just to provide a slightly off center vibe from the rest of the group to keep things interesting.
Beg for Mercy is classic and he played a great role in that.
Of course Lloyd Banks was better lyricist, but Tony Yayo played his position well.
Like with this track..he provided the aggressive background hype that made the track go even harder...visual and audio-wise