A combat ship to bridge the gap between the Vulture and the high-end combat ships (Clipper/FAS/FDL). In essence a ship that costs around 20-30 mil fully combat fit (Vulture is around 12m, FAS/Clipper around 75-90m, FDL around 120m).
A Multirole ship between the Asp Explorer and the Python, at around 50-70m fully fit.
Above everything, fixes for terribad ships. Make the Viper 3 and 4 actually maneuverable, as the fighters they're supposed to be (as in superior to the equivalent multirole ships). Make the Type 7 an actually better transport than the Clipper, which costs just a little bit more to fit for the same job and is far more durable and capable of evasion. Make the Federal Dropship and Gunship decent alternatives to the FAS, instead of ships that nobody uses unless they haven't tried a FAS yet for some unknown reason. And Jesus H. Christ, make the Cobra 4 not be a sitting duck incapable of using its hardpoints.