Just to get this out of the way, my Hopr tokens are not on mainnet, so I have no stake (ha ha) in this.
I wonder if there are small holders that are stuck on mainnet that might want to participate in the staking on xdai but find that bridging fees are too high?
Could there be a way to set up a 1:1 swap to xdai by sending a token transfer (cheaper than bridge) to the a mainnet address that is monitored and would send out the same amount to the same addresd on xdai?
I think Synthetix did something similar with helping users with getting eth for gas on Optimistic Ethereum.
It is definitely NOT decentralised, but there is little cost other than a small amount of dai for sending on xdai (could be recouped by smiling a little bit of hopr).
Anyway, just a thought, in case there are small holders that find themselves stuck or dreading the bridging fee?