Although I agree that FSDT and Flytampa are among the best scenery designers out there, and doing KDTW would be good (I personally think FSDT is better than Flytampa, just my two cents), Sun Sky Jet KPHL is payware quality. If you have a look at their forums, so many people, following release, were saying how they ought to charge for it it is so good. Now I use FSX, and that version hasn't been released yet and I am patiently waiting, but if they are making KDTW (probably with working jetways), you can bet on a complex, beautiful scenery.
Regards