Hi,
My being a "producer" would be hard for you guys ... in general, the ideas and comments that I have, fit details in "rehearsal", and
you guys tend to look at the comments I make -- comparing them to a finished product. That defeats the purpose of using these ideas and moments and coming up with something new and fresh, instead of rehashed!
The only thing I would do, likely, but also would undo the next piece, is probably tie in the loose ends better, so that the transitions from point a to point b, to a chorus and back, are more seamless and defined differently. For example, in most rock music, it is simply a chord change, or an instrument change ... and all you have to do is use that instrument in the background, and then give it the foreground, so that what would normaly be thought of as a melody. or harmony, is all of a sudden a main theme, and then things could revert back, via the same process, or similar or different ... to continue the piece. This is just about all that George Martin did for the Beatles ... help make pop music sound stronger and better composed than a simple rock/pop song with a very simplistic concept for a start, middle and end! But the majority of rock/pop music composers can only see/hear their own instrument and not adjust to the idea of more than one instrument illustrate their journey at all! Some think that "keyboards" are replacing this idea, but they are not ... it's another person, and sometimes what comes out of it is not even helpful to the whole piece ... it's isolated and not related to the piece!
I would also, probably double layer Grant/ Strummy or both and have them together instead of separate. The different styles can be matched to make the piece more valuable ... however, the ability to do this, a la Eric/Duane if you don't mind the example ... has more to do with the ... GOT IT ... when it happens, than it does when you are playing or rehearsing ... some moments have magic ... and you can be a part of that ... but you have to have an ear for that "moment" and know how to help bring it about! My "directing" is more about trying to get those moments to come together than anything else, but some folks have a tendency to think that I am changing their musical tastes and knowledge ... and that is not the issue.
So yeah ... I'm glad to see Bapu actually suggest something completely different and not throw up ... that air guitar will have a kind of lazer for strings ... and where/what you do with your whole hand, not just fingers, is what would define the sound in it! So, the number of strings in it, could be many ... not just 6 ... because these do not need to be wound at all!
Personal preference ... whammy bar is a must so we can bend and mis-shape things even more!