Pure RNG is the worst thing ever.

[Noahlimits]

Or people DARE to roll on an item when they just enterd CT3 during finalboss fight? Those people should get a lockout on rolls as well!

Who are you to say what people can or cannot roll on? If someone joins in progress they're filling a need the party had. If people got locked out from loot/drops from joining in progress, nobody would ever join WoD in progress. Ever.