Congrats on the publication! Great that you were able to quantify and quality the contributions of such events. I agree that putting more focus on improving the capacity of identifiers would be very helpful to keep up with iNat’s growth. These ID Blitzes sound like a very good way of doing so!
In this proposal to set up a new “Identification Center”, I also suggested a section dedicated to identification events. I think combining events around ID’ing WITH additional training and resources, and making it very place- and/or taxon-specific would go a great deal in increasing identification capacity by making it accessible to beginners and seasoned identifiers alike.