Great, let me know what you feel got overlooked or was just done in your opinion incorrectly. Whatever it is go ahead and throw it out here.
Things that are missing-
The TDF should have destroyer class warship (the Concordat Frigate is described as being a bridge between corvettes and destroyers - ergo there should be a destroyer in the Concordat Navy).
There should potentially be another Taurian Corvette class that dates back to the 2360s (although you could argue they were all retired)
We need more mechs- the TDF had other mechs (heavy/assault class if you read the Talos entry) that are not described in the book.
We need fighter carrier to replace the leopard CV which was not yet in service- it entered service in 2581. (we may need multiple fighter carriers- I don't see the TDF and the SL using the same design....)
We need Davion warships to replace the Aegis and Barons that were used at Tentativa (They were not provided to the IS states until 2582). We may also consider replacing the Vigilants and Vincents but they could have been in AFFS service at the point. We need an earlier version of the Vincent (say the Mk XX rather then the MX XXXIX).
We should come up with Taurian armor units and maybe aerospace fighters.
We need stats for the Athena class warship built by the MOC.
We need new RATs that are actually correct for the era- i.e. no placeholder units.
I'd be interested in seeing a section on Taurian raiding operations during the war- they were enough of a problem that the SLDF used the Tracker as a Q ship during the war.
A realistic fleet list for the SLDF would be nice.
That's all I have for now.