I'm thinking of using the power up tokens from the mission that came with Imperial Aces. It would be cool if those were on there.

Even focus, evade, stress, and critical effect tokens could be added.

ooo and Proximity Mine tokens would be nice to have.

I agree. I would like to see some non produced things be included too. Like Turbolaser turrets, death star trench, etc. New backgrounds would also be cool. Death Star surface and and asteroid/moon scape would be great.

I would also like to be able to use other existing tokens such as Proximity Mines in my designs.

Ditto. I wanted to include the turbo laser and ion cannon shots from the Hoth missions in one of my scenarios. It would be nice to have access to all tokens available in the board game. Until then I improvise.

I don't find the token with the numbers of the ships. But I can see them in some scenarios.

Are they in the tools ?