Well, and scaling that loot system would be kind of problematic.
It would mean that 10-14 players would have to share on the same 2 loot.
15-19 on 3 loot, 20-24 on 4, and 25 would get 5 or maybe 6.
Yeah that's a tricky one. They could solve this though, potentially; if drops-per-boss would scale cumulatively based on the number of players, they could rationalise it down to a fixed chance at "something" dropping based on the number of players in the raid, so that guaranteed loot happens for a round number of players per-modulus, and the 'extra' players feed into a chance for one extra item
e.g. if each player in your raid provided 25% chance cumulatively, you'd end up with something along the lines of:
10 players = 250% loot chance = 2 x Guaranteed drops + 50% chance for a 3rd drop
17 Players = 425% loot chance = 4 x Guaranteed drops + 25% chance for a 5th drop
20 players = 500% loot chance = 5 x Guaranteed drops + 0% chance for a 6th drop
- At least that would (hopefully) reduce the risk of having players being excluded from a raid because of wanting to optimise loot chances.
Also, I think that having a lootmaster in a raid is a good thing for player respect. If a player abuses their position as raidleader/lootmaster then that player's reputation is quickly spread across their own server and even to their own guild.
On the other hand, I think PuG players mostly respect the loot sharing process - In all the hundreds of raid PuGs I remember joining during WotLK, being in a raid with a ninja lootmaster maybe only happened to me perhaps 1 or 2 times throughout the entire expansion. It's also a good thing to have both for the friends/family guilds and players, who blizz are directly trying to cater for :)