Only two questions about the Legacy League, and both are about stacking.

1.) Can I have multiple league-stones of the same type? i.e. Two Breach league stones for tons of breaches.

2.) Multiplayer??? If I go into a zone with a Breach stone and my buddy enters at ~the same time with a Perandus stone and a Talisman stone, what actually spawns?

For #2 I'm assuming it is just 'The person who spawns the zone decides.' But I would love to hope that it all just piles on. I'm a fan of the Ruckus