I also hope they'll support USB 3.0 external hard drive to plug into the dock, just like on Xbox One, of course you'd able to play those games only when the Switch is into the dock, though it'd help cause you could manage your games putting there the ones you know you want to play only on TV and also you'd be able to transfer easily every games from the USB hard drive to the Switch storage/SD and vice versa.
Of course it'd still be a bit annoying, though always better than be limited to 128GB+32GB of storage and then having to delete all the other games you own having to re-download them again later if you decide to re-play them