The only towns that would find it easier/quicker to get to MAN if Leeds airport was to move to Church Fenton are those North East of the small town of settle. For literally millions upon millions of potential Yorkshire passengers who would not bother with the struggle to Yeadon (and that includes a large part of Leeds) Church Fenton is much more attractive and an easier shorter trip.
Have a guess which is quicker in- Sheffield to a, Manchester airport b, Yeadon airport c, east midlands airport or weyyy in the north sea tadcaster (church fenton)???
This is why an airport at Church fenton would be successful it is easily accessible to 99+ % of the whole of Yorkshire's population and also would help passengers from neighbouring regions that cant sustain certain flights using just their own catchment ie the North East.