Evilstein wrote: You are wrong, I will not tell you what is a race and what is a positional in real life. The denomination is just for gaming purpose, for your information all players are used to be positionals, they can be a "special" (see the PDF Rule of Dungeon Bowl).

You don't get it do ya?
Trolls are a race it is not a position.
Orcs are a race and not a position.
The difference between Orcs and Trolls is that Orcs can play positions, like an Orc Blocker or an Orc Thrower.
Since Trolls can't play any postition them being defined as a Race for DB should be enough.
The problem is that Orcs also have Black Orcs and they are a race too, just like Trolls.
It would be a good idea to classify the Black Orc as a Race (and a BG).
Sure a Black Orc does not suffer from Loner, but he only has ST4 and what is more important is that he has normal access to General Skills. So you could say that the Black Orc is a more intelligent BG.
So if Black Orcs are considered a Race (and a BG), I'm sure that Emerald coaches would prefer Black Orcs over Loner Trolls. If the Trolls are substituted with the Black Orcs (as an option for the 3rd Race/ BG) I suggest that Cyanide makes the Trolls still available in the Goblins section since Trolls still have Throw Teammate.
But they have to choose between the Black Orc or Troll for their BG.
Unfortunately this would not work for Mummies since the undead team has no positionals, which makes it a bit of a problem.
The Wight could be considered a Blocker since he has Block, but I have no idea where a Werewolf fits in.
Evilstein wrote:Dark Team as it is plane : 0-16 Undeads- 0-6 Dark Elves- 0-2 Trolls
0-2 Mumies Or Trolls + Some deads + 0-6 AG4 (with the STR 5 Rule)
or
2 Mumies + 2 Trolls + 0-6 AG 4 + Some deads (no limitation rule)
Note : Troll have to be replaced by Gob in my opinion.
You see homeworks are possible...now, you can do it for the 10 Colleges.

I simply don't like to speculate over colleges that you can't playtest right away in DB.