I have no problems with them being released as a Gym Raids and 8 Players is enough to take down a Suicune, you don't need 20.
No silly quests for me. If I want quests I'll play a different game where that's the standard method of game play.
Suicune was not very good as a Raid battler. A group of us did a Moltress straight after Suicune and someone used it in the battle and it was fainted in the blink of an eye. There's been heaps of chat saying it's just a poor Vaporeon.