Drop Mechanics

[McBain]

There is nothing currently confirmed that affects drop rates besides Big Lucks, and the Luck Elixirs.
Shamrock Ale Elixir gives you a 100% reroll chance.
Means if you get a green, it will 100% reroll into a purple.
Get a purple, it will 100% reroll into a pink.

Is this true? I was under the impression that a re-roll didn't automatically give you better loot, and the percentage was only referring to the chance that a re-roll would occur. If that is the case, then calling it a "re-roll" is pretty misleading, since that term refers back to the days of rpgs using dice. In other words, a chance to "roll" again for better loot, but not a guarantee of better loot.