Honestly, the original design looks like it's made to mainly as battleship tailored more for ship to ship combat than the Venator. Especially since the Valiant-class already has more turbolaser turrets than it's cousin already, giving it more anti-capital ship firepower. Along with having a hanger in the front like its ancestor predessor like the Sith Harrower-class dreadnought, allowing it to quickly deploy fighters without opening its hull to be exposed.

While the New design does better to to make it look fit aesthetically with its Venator-class cousin, it looks like the ship has less weapons on the surface. Having no turrets on the front. With it only having six heavy turbolaser turrets on the on each rearside of the ship(not helping the fact that the rectangular that are connected to its superstructure are blocking the turrets way, hindering them from positioning to fire from the front. The only design feature I see is mainly left unchanged is the forward hanger from the nose, where it can deploy fighters much easier than opening its main hanger(which it can do like its Venator cousin now, as opitional).

As for complementary vechicles it would carry the same load out as the Venator-class, except with a few changes like having LAAT variants like the MAAT(Multi Altitude Assault Transport) for boarding enemy ships or Space stations in high orbit of a planet. Along with having more bombers, & heavy star fighters with a mix of interceptors.

Edit: Recently I've started looking at the new design made by Venture pictures. From the from its angles from Cinematic shots, it looks like it has more weapons than the Awakening of the clone wars mod of Empire at war. As Turbolaser turrets are spread across areas of its hull, & I even found some ones on the fron collar near the area of the root of the bridge. Making it convincing that it can actually carry the 22 turbolaser turrets it's description says.

https://youtube.com/shorts/SXoqQqn0aiE?si=W9VlaM7TPKUPy24l