I think that Triglavian Combat Anomalies would increase the play value of the Abyssal sites as a whole.
The sites would span in a system randomly like normal combat sites span. Each site would be comparable to a level one or level two Abyssal site. The main difference is that the combat anomaly sites would contain Triglavian Commander Tags that could be turned into Concord for limited run BPC’s to produce Crystalline Isogen - 10 or Zero-Point Condensates from.
The second type of Abyssal combat site would be a level three site that would need to be probed down first before accessing. An increased number of Commander Tags would be rewarded along with the chance of a BPC drop to produce the Abyssal site components listed above.
The sites would be random types and would not require a Filament to access.
The level three Triglavian combat anomaly would also be connected to the PvP abyssal sites but could only be accessed by using a new type of filament that has a chance of connecting to a PvP Abyssal site or will simply return the player to normal space.