If you'd like to try something other than fighters, OS&C could use both a passenger freighter and 1.2k passenger transport something akin a coach or ferry respectively. We need something to allow folks to try the faction without dropping 50 mil upwards on a glorified transport and add a touch of variety.
For something a bit bigger, a replacement or updated model for the luxury liner wouldn't go amiss or if you'd really like to push the boat out, a different and larger model for the static liners would be interesting as I've always found it a bit dull to have the exact same model for both static and flying liners.
Whatever you decide, I look forward to seeing the outcome.