Well the black guys are usually from US and from what I know not everyone is comfortable with rubbing dicks during DVP or DAP, not even Charlie for example even though he does it a lot
So from what I know I think it would be worth getting guys who are already experienced in gangbangs and DVP or DAPs so here are my picks:
+1 for Rico Strong, extremely experienced amazing actor and does DVP quite often
I would love if you guys bring back John Johnson, also amazing guy. Maybe bring him to Prague same way you do with Charlie ? They shoot for the same companies most of time anyway.
He started shooting BI scenes recently but you wouldnt tell he is Bi anyway, he was shooting straght scenes for much longer time and was great in them. Also likes DVP a lot
Prince Yahsua is one of the more popular ones and although he is mostly in 1 on 1 scenes he did quite a lot of DPs and some DVPs
JonJon, also very proffesional guy experienced in gangbangs, but he isnt that much active lately and his body is maybe bit too "modified" for some people here. He has a lot of piercings and tattoos¨
Jax Slaysher = one of the most rising stars in US porn and ladies favourite. Would be tough to get him here because he would request a bigger pay but I think it would be worth it. He did a lot of double vag scenes and anal scenes
And then there are two less known guys that I know of, but still prety good guys and comfortable in "rubbing dicks"
First is Mickey Mod and second one is Alex Jones
¨ Someti
Generally I think Gonzo could use few more black guys because right now we got just two I think, and maybe Ed

Sometimes Mike appears on Gonzo but thats rare