Agreed on near all counts.
I would say that it is fine to set simple challenges that introduce players to every aspect of the game, even if they will not play it much, it is good to encourage people to at least try everything.
Using challenges as an introduction or very simple training is fine.
But the 300 revives/resupplies on objectives in Sabotage is indeed an example of a terrible challenge.
Players have already been introduced to Sabotage in other challenges. This one requires them to play it between 50 and 100 times and, not only that, but to play it using the Support class in a certain way.
Even if it was a special challenge for Sabotage fans it would be painful.
You are right. Simple challenges as an introduction are fine.
Play Sabotage 5 times, not bad. Even Win Sabotage 5 times was not horrible. At least for one time challenges.
Simple challenges like that in Weekly/Daily though would be annoying. I know I don't like Sabotage, Squad Deathmatch, Team Deathmatch, etc. Weekly challenges that make me continue to have to play those modes will just make me eventually not play.
