Single-sided yield for non-RUNE asset has been touted as the most desired feature needed on THORChain and its coming soon.
Single-sided yield is simply about a user depositing an L1 asset in a single tx and earning yield on it in-kind. Then at a later time withdraw the L1 asset with the yield earned, i.e. earn $BTC on $BTC or $ETH on $ETH. With this system, there's no wrapping, no custodians, no complex UX, no price-exposure, no fake yield.
This change coming to stagenet in the next THORChain update creates the mechanism to payout rewards to yield-bearing synth holders.
THORChain puts the UX as follows:
Nine Realms has indicated they will be rolling out a testing plan shortly.