A lot of guys I think who did steroids are now injured. Also, a LOT are RPs who you wouldn't think, so I'm not sure about them.
I haven't noticed a real declination among players who I didn't expect to in skills, besides Giambi. Perhaps you could look at a guy like Chavez, but has he gotten any smaller? It seems to me that the jobs they've done to crack down shows that either they did a lackluster job and people are still doing it, or there weren't as many as we believed.
Edit- I'm looking through again and found
Travis Hafner,
I'll look for some more examples.
Casey Blake Victor Martinez
Blake, Martinez and Hafner all Indians and all experienced a large fall in all stats, coincidence?
Rafael Palmeiro, part of the steriods controversy this winter