It's acually not that big a change. There has always been the requirement to fly the plane unless you meet certain standards. Having another jet type (or turboprop for turboprop type), having 500 hours in type, having 1000 hours in types that require a type got you out of the pattern work if it is a level C or D sim. The big change is going to be you used to be able to avoid the pattern work if you had 2000 hours and 500 turbine, now it looks like the 500 hours turbine will have to be turbojet for jet types and turboprop for TP types. The present rules for ATPs are in 61.157(G) and 61.63(E)(F)and (G) for other grades of certificate. The NPRM for 61.158 says they are moving them all to one place.