my 2 cents. i have no need for hot swap. i am fine installing the variant i want, so GTN or GNS. and cant you reduce your variants offered. do you really need single dual GTN, 750, 650, GNS GTNXI each and every combination.
i understood that Avidyne is a one to one replacement for the GNS530, so no changes in the 3d model needed.
would love to see the Avidyne in the Duke for example or TBM850.