I think this is a good idea, however, Id like to keep thread is about compatibility rather than 'suitability'
your welcome to create a new thread, with a link to a spreadsheet
(I assume you are talking about a google docs spreadsheet, so anyone can update it)
my only comment on the idea is, if a midi controller is usb class compliant, axoloti will support all messages it sends - so in the end the spreadsheet is a comparison of midi controllers (of which there are 'lots' on the market, and keeping up with new ones would be time consuming) rather than something specific to axoloti. but hey, if its something someone in the community wants to do , cool