It's weird. This game would still be as mechanically fun, but it wouldn't be as _awesome_ without painted minis.
And let's not kid ourselves: 90% of people wouldn't paint their minis. Which means that when people go into stores and see people playing, the game just looks a lot less interesting. Because of that, I think it might actually hurt sales of the game overall.
True. The models serve zero purpose apart from being 'shiny'. If we take a step further back and ask if people would still play if this didn't come with minis at all. It's still mechanically the same game. I'm sure we'd hear a resounding "No!"
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I argue the ships make the game feel like SW (clearly) and most of us initially got into this game because of that reason. Removing the ships has an obvious negative effect. But further to this, the colouring of the ships also plays a part in that recognisable 'Star Warsy' design aesthetic.
Where it gets interesting for me is watching FFG continuously produce and create ships that fit into most of our personal SW canon and design space .. given they exhausted most of the 'official' recognisable stuff in early waves.