would the SACD cd player improve the sounds of no-SACDs?
A better player will make your CDs sound better. Not because it plays SACD, but because it is built better. SACD is just a bonus.
CD player recomendation
The Black Friday gods were good-hearted and I was able to purchase a Marantz PM-Ki Ruby amp and Elac Carina 247 floorstanders this week. The amp does not have a DAC and the speakers have AMT tweeters. I am not interested in streaming and only have a mild interest in SACD. I would appreciate your CD player recommendations.