that would turn me off. pong is in that category of games that would be indecent to play for money. 
feels like training your puppy to steel neighbors' newspaper so that I don't have to buy them. 

the goal of pong is to add support of multiple (concurrent) trezors to lokal pc. it could lead to some special type of multisig support. imagine you have a set of married wallets and you wait for a third signer to arrive, what will you do? why not play pong?