The CDS was my second, and last CD player. I was a late adopter of CDs, but eventually caved in, and when the CDS appeared, I found what I was looking for, and had many years of pleasure from it. The CDS2 wasn't anywhere near as good, but the CDS3 was, in many 'hifi' aspects better, but it just didn't have the rhythm and emotion that the CDS had. It's a bit like comparing an early LP12 with the latest version. Improvements have removed the obvious flaws, but have also removed why we loved it in the first place.
I then stuck my toe into the streaming world, and the improvement in accuracy and detail retrieval of even a modest streamer was enough to make me sell my CDS whilst it was still worth decent money.
If you love it get it repaired, and if you can part with it, a Raspberry pi and a decent USB DAC will be quite a big step forward in fidelity terms, but maybe you won't find a DAC that gives the same boogie (certainly the Naim DAC didn't which was a disappointment - my Lakewest MDAC gets close)