Experience Half-Life 2 like never before. Return to City 17, held within the iron grip of the Combine and the Consul. Reunite with old friends, and enemies. Traverse vicious canals, make new allies, and brave the horrors of the Quarrytown. Immerse yourself in a revitalised combat system featuring old arsenals made new again, with added features to raise the bar in gameplay. You've been waiting for quite some time, now. It's time to climb aboard.
Manhack Arcade Interior Revamp 01 (V2.5)
Props seems like they're there for the sake of props.
The green sign on the left, centering it on that wall would make it fit better imo.
Some light towards the Combine door maybe?
I agree with scart here, but then again, I'm not sure where in the arcade you are at. If it's in a place where people generally walk through, I would think the place would have a lot of combine equipment and very little clutter. However, if this is a sort of back entrance, you're probably good.