Hamzah here from Polygon DeFi.
Firstly would like to thank @wormhole for the well thought out plan to grow tBTC. We are in dire need of a decentralized native BTC and Threshold is a strong contender to become that.
Really appreciate the effort to mention security of paramount importance and the idea to whitelist only bridges with good lindy effects and traction including L2 bridges.
Polygon DeFi especially on zkEVM is in early stages (check progress here) and we have huge plans ready in next few months. Would love to see tBTC take center stage there. 