You get 2 random guns ( any gun ) and you try being the last player standing. Some ppl would probably say it all luck because there might be a slight chance for a gun that's like 100k+. This game would be using skill. It really encourages on dodging and the bullet replacement. The player limit for this idea would be around 50-200. The map would depend on the player limit. If it was similar to the CTF map then that'll be cool.
I just thought of it randomly it thought it would be cool if it added. Plus it lets players use any random gun so that'll stop the whining.
Or you can limit the weapon variety to everything in chris' weapon shop(minus metalstorm, and colt), the ap7, mk23, Deagles, Customly Ajusted starter pistols, Acr's, AK47's, taurus, steampunk pistol, g18(slight chance). and that 2000 gralat silenced rifle sold somewhere