..if Dennis had remained fired in 1979?
Would Styx have continued without him? My guess is they would have found another keyboard player that sounded similar to Dennis to finish the tour. Then, they would have sought out a name keyboard player to record a new album and tour with. The only main name I can think of that was available that would have fit would have been Steve Walsh who had just recently quit Kansas. Would a new record have gone platinum with this group? Possibly. At minumum it would have been a Gold record. Would they have gone on to record and tour again? I doubt it. Tommy would likely have gone solo.
What would have become of Dennis? Obviously he would have gone solo..maybe opened for some major acts and possibly had a Top 10 hit. Maybe not..not sure if he would have toured. Who would have been in his band in 1979? Would he have recorded Best Of Times on his own? If the new Styx had folded after 1982, would Dennis have gotten the group back together without Tommy and done Kilroy anyway? I could see that as a possibility as he really didn't need Tommy to create Kilroy anyway. It probably would have generated a similar result, meaning a lot of "what the hell was that?" comments and looks from fans. Would the record have sold a million copies? Would Roboto have been a hit single? Would the tour have been a success?
Okay...I will just get some of the predictable responses to this out of the way now...
Styx would have been an opening band without Dennis....they would really suck...Dennis would have sold 3 million copies on his own.....Dennis was Styx so without him they would not have sold 50,000 records....Tommy would have spiraled into a sea of drugs and alcohol and not been able to finish a record and tour without Dennis......I'm sure I missed something here.