Of course people can disagree on what is good sound. But, I don't think one can categorically dismiss older systems, or modern systems built on such older components without offering some specifics of what one has heard. From what you have listed so far, I would agree. That stuff is highly colored and not my cup of tea. But, a well implement system using WE 555 compression midrange, and a horn like a 15A, a WE 597 tweeter and M18 woofers would be a completely different thing. I've primarily listened to modern systems using such drivers or modern clones and drivers inspired by the old WE drivers and these are NOT like common Altec or Klipsch horn systems. Their are RCA drivers, International Projector Company, and other vintage manufacturers that are also quite rare (and expensive) that sound great. Some modern stuff by G.I.P. laboratories, Cogent, ALE, and Goto sound quite good too.
In the wide range cone driver camp there are surprisingly good drivers by the likes of Voxativ, Lowther, AER, Cube Audio, and a number of other drivers I've heard whose manufacturer I could not identify. But, if I were building around a wide range driver, my choice would be an old Jensen/ERPI M10 fieldcoil driver (13" paper cone) and a WE 597 tweeter. Such a system might not have deep bass, but, it would be so musical and enjoyable that I don't care (I've heard systems with the M10, but with lesser tweeters and those sounded terrific).