What incentive does Styx - or Dennis for that matter - have to record an album that will not sell all that well? Even if they do a new album/re-recorded hits/DVD package exclusive at a WalMart or Target, it's not going to be the second coming of Grand Illusion. Styx is not AC/DC or Kiss, and if Styx did the aforementioned WalMart deal at some point, it'd probably sell more like the REO collection.
And of the newer songs they've done post-Cyclorama, clearly everyone has their opinion on them. I know mine have been well stated, but they didn't help sell the albums they were on. Even top selling artists don't sell like they used to.
They don't owe us anything, and the majority of people just want to hear the hits they know. People forget Styx is a daily business concern, so why would they upset the apple cart for something that would have little reward? It may be good personally - but I don't get the impression any of them are gung ho to do it even for that reason. Dennis had something to say (and arguably, something to prove) when he did 100 Years, but I think even he knew it wouldn't sell millions in the US. I think that could very well be the last new Styx-related release of new material we may see in the near future, if ever.
EDIT: You think Styx fans are bad? Check out this thread over at Counterparts:
http://www.rushmessageboard.com/cpmb/in ... opic=33316
Neil talks about potential new stuff (OK, so Rush + orchestra) and you'd think he said the worst thing ever. So put it all in perspective folks. Fans nitpick. These bands can't satisfy everyone.