Too big. If that is not a dreadnought hull and vastly dwarfs even an Avatar, then it is a supersized titan, or a mobile citadel platform of some kind.
Given the scale of construction - in regards to how the construction is being executed - it’s made out of a barebones framework, so spartan it’s barely even a support frame.
But the rear section can’t be much but an engineering section. The diagonal sections do not make for good hangar bays unless gravity is locally changed, but that takes more energy and even with a naked singularity as large as could be contained in this frame, making these design decisions is impractical.
So it is a structure with a propulsion and engineering section, but is as large as, if not larger than most deployable structures to date, except for maybe one.
The Drifter Hives.
If the Triglavians are looking to counter them, one-to-one, then a mobile structure that does not need to be disassembled to relocate it would certainly be a great advantage, and one comparable to Drifter Hive relocation capacities.