That Command has its head up its... nether regions is generally known. Sometimes I wonder about R&D as well.
In Freespace 2, the GTVA had become rather cocky and too confident of their technological superiority... but one needs to ask where that self-image came from.
FS1-era craft tend to be uncompromising and great at their role. The Valkyrie is everything an interceptor should be and is simply a joy to fly with its vast afterburner reserves and extreme acceleration/deceleration. The Ulysses is still the space superiority fighter to beat Dragons at their own game (a case could be made for the Loki if Kaysers are available and you prefer something slightly heavier), and the Hercules remains the iconic heavy assault fighter for much of FS2.
Something similar holds true for the bombers: the Athena is fondly remembered as an excellent strike bomber/missile delivery vehicle that could hold its own in a dogfight and the Ursa is still the craft of choice if payload matters.
The new toys? In the Myrmidon, we got a supposed Ulysses-replacement that is nowhere near manoeverable enough to fill its stated role, a tad on the slow side for interception duty and too flimsy for an assault fighter. It also has a huge target profile and off-center weapons; apparently they bashed mismatched parts together until the feature list looked good on paper. The Herc2 isn't a bad ship, but why build an Athena-wannabe if we could have retained the Athena? The Perseus is a solid and balanced design... too balanced. The Valkyrie was better as a pure interceptor and the Loki is still better in a dogfight... why introduce another multirole craft if performing its job as a slightly slower, heavier interceptor is about the only thing the Myrmidon does well?
Truth be told, the Ares, Erinyes and Pegasus are worthy additions, but as I understood it those are not going to be produced in numbers.
The new bombers seem even more questionable. The Artemis can't use its 4-gun bank well in a dogfight because of horrible placement. Against capital ships, a 2+2 split would better so we can carry Maxims and still defend ourselves. It's reasonably speedy while also considerably sturdier than the Zeus so I suppose it has its niche in theory... but I can't imagine flying it voluntarily if the older bombers are available. The Boanerges is worse as an almost strict downgrade compared to the Ursa... the modest increase in cruising speed is not worth giving up a 3-gun-bank, a Kayser turret and a good part of one's hull armour. Different-sized banks are good in principle (a small bank for self-defence, 2 large banks for bombs) but an Ursa with an all-bomb loadout can still take better care of itself.
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The GTVA made considerable advanced in many areas of weapon design: Beam and Flak cannons redefine the capabilities of capital ships. Missiles have become a lot better. Maxim cannons give fighters a great standoff potential against capital ships and need to be dealt with. High-powered primaries are available at a corresponding high energy drain and in limited numbers. Good job there, R&D... but if you can do this, then why is the bread-and-butter weaponry so utterly pants?
Freespace 1 had an awesome general-purpose weapon in the Avenger. Its hull damage is still spectacular for the low energy requirements, and we had not one but two excellent anti-fighter tools in the Flail and Shield Breaker. The Subach Hl-7 sucks compared to the Avenger (the Mekhu isn't too bad in comparison, especially since we lost useful anti-shield tools), and the Morning Star/Circe are almost unusable thanks to unreasonable energy requirements for a weaker effect than that of their predecessors. The Prometheus R is downright embarassing.
There isn't a single energy-efficient setup that can compete with the classics.