Dynamic scenery?

Does anyone know a generic add-on to add generic dynamic scenery or even static scenery on the tarmac - like pushback trucks, ground crew, catering, follow-me cars... MORE REALISM? I am an realism addict, sorry.I know that many addon airports feature some dynamic improvements, like the Service Armada from SimFlyers, but is there anything that works for every airport? It really shouldn't be that hard to program, if you can identify the parking spots, no?Thanks,Pat