It would intermingle with my current routes. So that 30 P1 would be about 7 in an area 1/4 the size of the current express route. Doesn't sound that daunting to me.
Let me give you a brief glimpse in to my daily routine:
We start at 9 on Mondays and 9:45 the rest of the week.
I average 6-8 air stops per day. Depending upon where they are I try to deliver their ground at the same time.
My first ground stop is Walmart. 4 bays, 2 of which are usually filled with their empty trailers. That means every vendor is fighting over 2 bays. The beer and milk guys usually tie one of those up for at least an hour so essentially we are fighting over one bay. Lately I have been lucky and have gotten right on to a door but if I can't I dump their air and go back for their ground after running off the rest of my air.
I deliver to our local college, which closes from noon to 1 everyday. They hate it when I can't make it there before noon.
I have three schools on my area, none of which want me anywhere near them between 1415-1445.
I have 28 pickups-----several are pickup and deliver at the same time while the others are pickups which start after 1430.
I have to close out the UPS Store by 1800 (1830 during Peak).
Throw in an increased focus on stops per car and you can see it is a busy day.
Straightlining would shave at least 30 minutes off of my day everyday.