Heretic (or maybe it was Gecko?) have said a few times that they are just hanging out in the hall until they are moved to their permanent location. Think they are planning to combine all Borg-related earnable/purchasable gear into one big shop run by D'vak and his little gang.
I suggested this in another thread and suggested it in the past. I too think that the Omega Force should have another "office" or "shop" in Battle Group Omega.
I threw out three suggestions: ( the 3rd being the easiest to implement )
1) We beam over to D'Vak's ship. Have it be a prototype Federation ship that we haven't seen yet. Something that was worked on by the Klingon Empire and the Federation before the War started. I suggest this design Hurricane-class-starship ( Click ).
This ships history suggest that it was designed by a joint effort of Klingon's and Federation engineers. And later you could release this ship to Omega members who finish "Into the Hive". The DS9 location would supplement this location.
2) We beam over to Space Station Regula One. Remember the space station that was used in Star Trek II: WOK? Well the planetoid that Battle Group Omega is hiding near could be the remains of Regula I ( Click ), after all they used Protomatter to make the genesis garden in that cave it could have become unstable and caused it to go boom. Also the station could have been abandoned and the Omega Force has got "most" of its systems back up and running. It can be tilted and banged up and not only have the D'Vak store there they could also put and experiment with a second area to craft. The DS9 location would supplement this location.
3.) Move the U.S.S Victory to a more central location between the Federation and Klingon Fleets at Battle Group Omega. We can then beam over to the U.S.S. Victory. Captain Four of Ten ( Click ) could be the Omega Forces Second in Command and currently in charge of Battle Group Omega. Once we beam over to the U.S.S. Victory we leave the transporter room and have access to certain areas of the ship. An Omega Quartermaster could run the Store and we could have a small crafting area ran by the infamous Lt. Ort ( Click ) who needed a better job anyway, and to keep the Klingons happy allow access to the mess so they can get their drink on. The DS9 location would supplement this location.