I'd say Considine and Hayes are more professional than Brown, and McGinn always puts in a shift when called upon. Lewis has been very good since being dropped, but has always been professional (and generally very good). I have no issues with any of those guys, and I actually think that number of 27+ players is probably a requirement. Over and above that, you have McGeouch, Gallagher, Kennedy and Jet who are older and probably not good enough. I think I agree with you that the balance isn't there.
However, Glass had no recruitment support in the summer, and I'd like to see what changes are made in January and probably the summer before passing too much judgement on that front. Regardless of Glass still being here, it'll be a test of the new recruitment guy and his overall strategy. I'd like to think he'd have vetoed guys like Jet and Gallagher (although Gallagher was signed before Bates, so hard to be too critical) in lieu of younger players with more potential. Let's not forget that McInnes was allowed free reign to sign guys like Kennedy and McGeouch in January windows where a recruitment specialist would likely have talked him out of it.
Hopefully we'll have more out than in this window. I think McInnes would have been 9 points ahead of this Glass side at this stage, and the mythical "more entertaining" fitba is something that I'm certainly not seeing. I hope we stick with him beyond the summer and see how he gets on next season.