On a small map such as this with potentially quite a lot of traitors if every one of them were to buy a headcrab launcher it would be pretty cancerous. As for handcuffs i feel like they would be used to troll a specific player by keeping them cuffed and continuing to recuff them more than they would be used strategically.
Also a lot of traitors are gonna get pissed when they get cuffed at the start of their t round and killed for dropping their t gun.