Ok I'm trying to wrap my brain around mono and stereo. Why is important to get mono tracks such as the bass? Also do you prefer that for guitar? When I record electric guitar to stereo it seems to have much more life to it than a mono track. Also if I take a stereo track and convert it to mono why has it also become lifeless. Don't quite get it.
I also get a lot of people sending stereo tracks when it's not necessary (or desirable). Things like vocals and bass only need to be mono because the same information is on both channels. A stereo track is twice the file size of a mono track so it's just a waste of bandwidth. I agree a guitar track can sound better in stereo by itself but remember you are only listening to the guitar, not the entire mix. A mix full of stereo tracks will soon become muddy and lack definition. 95% of the tracks I get will be processed (and converted to mono) before I import them into the DAW. If a track needs more "width" you can put on a stereo delay to expand it a little. The exeption to this is things like synths and piano which I leave as stereo if it fits the mix.