btw!! on the ddr subreddit (i am sorry) there is a guide for the best pads to buy : https://www.reddit.com/r/DanceDanceRevolution/comments/yi7h8l/2022_pad_buying_guide/

It won’t be possible since even Apple is considering the possibility of sideloading apps because of EU’s competition policy legislation. If Google does the same, i guess they’ll just take a pretty good fine again