I think this needs to be said...
What made Styx was TS and DDY. Period. Without either of those two, the band does not perform as well as when those two are together in the fold. The other members (with the exception of Glen Burtnik) are mediocre talents at best.
As much as TS has P1$$3d me off over the years, there is no question that he has made a signficant contribution with his songwriting to Styx. He has written some gems and his vocals (especially when harmonizing with DDY) are a true asset that made that Styx sound. His guitar playing is quite average in my opinion especially when compared to some of the guitar greats out there - and even compared to someone like a Neil Schon of Journey. But his vocals, his songwriting are for the most part outstanding.
DDY is obviously the foundation and has the vocal chops, the songwriting skills, the production acumen, and also the creativity to create something that was truly unique in the rock world. His harmonizing with Shaw and his songwriting brought the band much of its commercial success. Like Shaw's guitar playing, his instrumentation pales in comparison to his other talents, but he is still a well regarded keyboardist. I don't think he will go own as the greatest keyboardist that ever lived, but certainly is in the top 20.
The rest of the members put the proverbial saddle on DeYoung and Shaw and rode their talents to success. JY is an average guitar player at best (I consider him a notch below Shaw), is NOT a good lead vocalist, and is very much a one dimensional songwriter. He has never really written or sung a commercial hit, and one could argue that outside of his "supposed" business acumen, he doesn't bring much to the table.
The Panozzo brothers, in all honesty, managed to stay in the group partly because they founded it. Not to trample on a man's grave, but John Panozzo was not a great drummer. His drum style is very ordinary and he doesn't ever do anything that new or innovative. You don't listen to Styx to hear rip roaring drums. Todd Suchermann blows Panozzo out of the water on pure talent. Chuck is also almost non-existent. You don't listen to Styx to hear the bass rifts either. The Panozzo's were barely passable as a rhythm section and certainly didn't add anything. Compare the Styx rhythm section to Rush or even Fleetwood Mac. Quite inferior in every sense of the word.
I am really talking the classic lineup here, so will not address Gowan and Phillips and Sucherman.
So the talent lies with 2 individuals and a 3rd honorable mention in Burtnik. In all honesty, I would love to see a lineup someday of DeYoung, Shaw, and Burtnik in some form (calling it Styx or not) - now that would be special.

