It's total idiot the way it is now, sorry folks.
No, you just don't like it.
Honestly, I'd love it if you could house rule things like this in-game, and while I have banged on at Cyanide about this sort of customisation for years and there has been some limited ability granted to admins I don't think changes at the level you desire will be made optional, and deviations of this sort are unlikely to be made mandatory (and aren't necessary, tbh).
claiming that everyone who say death teams are a problem are just really bad at blood bowl is not helping either.
Has anyone done that?
it gives an unfair advantage
How does this "advantage" manifest itself? Because such teams don't win more than they should.
why is grab and frenzy limited?
Because the game designers said it should be. Also, it probably prevents some potentially confusing situations.
CRP page 11:
If a player carrying the ball is Knocked Down or Placed Prone,
he will drop the ball in the square where he falls. The dropped
ball will bounce one square in a random direction (see Bouncing
Balls, page 13) after the player’s armour and injury rolls (if any)
are fully resolved.
For armour and injury rolls to be fully resolved the decision to PO must be made. BB2's sequence is correct. I don't recall BB1's sequence and no longer have it installed.
I think this would be a really nice thing to have in-game. As @Arne says, goblinspy allows you to do it from mordrek's database.
As for vocabulary, I don't know if there's a standard manner but I tend to try to talk about "races" when talking generic such as Orc, and "teams" when talking specific, such as Orcland Raiders. Also, a "player" is an Orc on the team, and the person moving the players around from the comfort of his chair is the "coach".