Faulkner played in an era of low batting averages. His record is substantially better at home (matting wickets) than away. It's not so clear that his style of bowling (fast spin) would be successful on modern covered pitches. I don't think he's an ATG bowler, but at the very least there is a huge amount of doubt about how good he would have been. He just about makes the side on batting alone though, so he stays.I know Tayfield was an excellent spinner, but so was Faulkner in his own right, in which case I'd have both Neil Adcock or even Shaun Pollock ahead instead of Tayfield, have have the 4-pronged pace attack (plus Kallis as bonus) & the one excellent spinning all-rounder in Faulkner.
I want an ATG spinner in my side, which Tayfield definitely was. The main argument is variety. 5 right arm quicks are too many when you could have a bowler who brings something else to the table. When the ball isn't really moving off the pitch or in the air (as happens a lot), all the bowlers will struggle. Tayfield will be the best bowler under those circumstances, so he adds an extra dimension. When the ball is doing a lot, you have plenty of firepower in the other guys. More would always be better, but I would rather cover a hole than add to a strength.