I Guess........

I guess having a large number a options for MMP to start with would be the best way to go about this. One of the things that will turn players off the game will be having to download a huge number of add-ons just to be able to fly in some circumstances.
Not everyone can manipulate PC files confidently and the 'core' players that are still in the RB community are proberly the ones that have been able to do so.
Chas's answer to my Gameplay question in the post of the same name might help explain things.

I do understand though, that not being able to 'upgrade' the game as it gets older will turn players away too. But hopefully 17hours wont be discarded like Sierra did with Red Baron. Is it ture you are already working on a Add-on for the game already? (North Sea Theater or something?) Great going !!

Cheers Gump