The key here is to create the bridge and make sure we can trust it. I.e. the bot which controls the funds, will be centralized as I understand from your proposal, so you will somehow have to prove that these funds are safe and you cannot just run away with them.
Creating the market on ETH is something you don't have to worry about. As soon as the token exist on ETH there can automatically be a market via uniswap and all the other dexes over there (i.e. balancer)
In order to avoid the centralized security risk, it may be better to created a synthetic token where the minting happens with collateral. This would make everything a bit safer.