I voted "Yes" under the assumption that the game would be as it was intended to be - an simulation orientated game around the mainstay-planes of the Battle of Britian and not a 50% finished software of someday-could-be-a-BoB-simulation.
If the products, here 3-D models with their FM&DM are done with some dedication and pride in workmanship and worth their money I would pay for the work the dev do.