It's definitely the most iconic version of her, and would easily have the most shelf presence. When I think of seeing TPM in theatres as a ''kid'' it's always the image I remember most, Amidala in the red dress. For that reason it's my number 1 most wanted figure across all films/shows. Just love the Geisha-inspired look.
The white Geonosis outfit is a given at some point, and is iconic in its own way. Personally, I'd prefer them to hold that one back until they do an AOTC Anakin to go with it. Which likely wouldn't happen until after CW Anakin releases. We already have a couple of figures to go with the TPM version.