Any racks that use coasters/ wheels ?

Sound Anchor racks and stands are outstanding and all have threaded openings on the bottom that could accommodate coasters such as these or these.

It is about sound quality. If you want the highest sound quality out of your system then vibration control is of paramount importance. Coasters or other convience devices compromise sound quality. So folks interested in sound quality would not consider them.  

Once upon a time I used pointy metal feet galore, but for the past few years the only place I've had pointy metal feet is under my turntable. Whether or not I'm taking a sound quality hit with the current regime I just don't know. I just don't care very much, either, as my stereo has never sounded so good since I had a special room built for it.

I believe you can get butcher block racks with threaded inserts and then find rollers or easy glide feet.