I agree. The drum sound is really bad.
¯\_(ツ)_/¯
I've always thought of Under Wraps as JT's electronic album, especially with keyboardist Peter-John Vettese's influence, and the drums sound -- wait for it -- electronic. They might not have aged well, but that was certainly the intended sound then. It would be interesting to hear the songs with actual drums played by a drummer, instead of Ian Anderson and Vettese's programming, but it would be a marked change in the overall sound from decades' worth of listening. If the drums are redone, I hope there's an option to hear both versions. I love the album.