It is normal for there to be oil in the intake (compressor) side of the turbo. Mostly it come from the CCV (crankcase vent) that vents the crancase fumes back into the intake. It would ne a good idea to check for boost leaks and to makr sure the EBPV isn't closing when it isn't supposed to be. Just inplug it and try it that way for a while if there is any question.

As far as the turbo goes, theck the shaft at the intake. A little up and down play is alright as long as the compressor wheel doesn't contact the housing. In and out play is not good. Also look carefully at the wheel itself. The fins should be sharp and square and it shouldn't look like it has been sand blasted. Rebuilding it is not a big deal but removing it is a pain.