Stash merge and DPS counter

Hi,

This is my very first post here. I'm an old player, I started playing when Piety was the final boss of act 3.

Anyway, there's 2 things I think would be great addition.

1: It will be great to have a proper ingame way to calculate DPS. Of course there's all the path of building thing, but like poe.trade finally got inside the main site, or the filter got into the account instead of weird file in file explorer, I think it should be built in the game.

How I see it is a room like the hideout or plaza in the corner right that is call the DPS calculator room where you can put a custom dummy (choose its size, resistance, armor, etc.) after the room start with a countdown and you make dmg during 5 sec and it says your average DPS.

As an example, I just did a tornado shot build where the secondary arrow can stack up. I have no clue how many hit a boss in average, must depends on different factor and I can't really see it on path of building and I don't think we should rely on external tools like this.

Suggestion #2: why isn't there a button on specific stash tab (such as currency or divinination card) that simply says ''merge into the main tab'' instead of manually taking all your orb to transfert them stack per stack...