Probably a bit late to help since most people already cashed in their treasure 2s but maybe good to see all your experiences.
Im lvl 500 and used all my treasure 1s for sideshop gold. I thought it would be impossible to get an arcana but im now realising that I was probably wrong and used all my gems for treasures to get some more 2s and 3s.
I got close to 20 treasures and got 3 II and 1 III the rest were I. Which felt bad but whatever. I rerolled my IIs for more IIs once I realised that it didnt made sense to get more gold since I wanted the ursa immortal (sadly im sitting at my 42nd try) and I already cashed in my gems so no way I was getting the arcana now.
Sideshop feels rly bad. Sure its unique but boring and takes way to long to get through it all. I personally hope its not coming back.
In hindsite i would have probably tried to get an arcana to sell. Although it seems the prices are crashing and with treasure III they might crash even more and the ultra rare might have higher prices than last years.
What were your experiences with the battlepass? Do you think i could have done something better?