Glad you found us accommodating.
Bruce, the 4,000 and 5,000 foot restriction is an LOA prop vs jet with ZKC, SPI and MIZZOU. More often that not it gets muddled and a P-180 will end up at 12,000 while an EA-50 will be pushed down to 5,000. I know its a pain for pilots and most of the time I reach out to let the pilot cruise on in where they're at, but a couple cups of coffee a piece of paper and a pen would show you why its SOP.
Jim. I can count on one hand how many Bravo clearances I've denied so I don't understand why you feel a clearance is hard to come by here. Want to be over the departure end at 1000 feet? No. Over the Marker at STL at 2,000? No. Full procedure ILS 26L as SUS? That shuts down three airports, so no. Coming from the north I routinely work out the ALN transition because I need you down since CPS arrivals on 30's directly impact STL arrivals on the same flow. Jets with TCAS generally don't like being within a few hundred feet of other mode C equipped aircraft. When they RA its pretty abrupt and people, especially the FA's collecting trash walking the isles, can get injured pretty badly.
CPA, if you come back, ask for an arch tour. For the best view do it VFR and if you want an IFR flight plan pick it up in the air if the WX permits.