Yeah, pHIVE-pHBD would be an interesting pool because impermanent loss will be low as long as Hive keeps behaving like a stablecoin.
The link you posted will work better when you add the chain ID for Matic:
https://app.sushi.com/add/0x7cc15fef543f205bf21018f038f591c6bada941c/0x456320e9b87a7c84a53b8ab300067f3a29aab301?tokens=0x7cc15fef543f205bf21018f038f591c6bada941c&tokens=0x456320e9b87a7c84a53b8ab300067f3a29aab301&chainId=137