I think we might want to separate this proposal into two pieces:
1) OHM-sUSD liquidity bonds
2) sUSD reserve bonds
Liquidity bonds carry a higher cost. We need to bootstrap a new pool to the point that it can be activity utilized by market participants (my assumption here is that point is >$10m, and we haven't even reached that with FRAX yet). The benefit of liquidity bonds is in higher liquidity for OHM, and that it is a safe passive yield generating activity.
Reserve bonds have less strings attached; we can accumulate as much or little as we want. They also have more flexibility; this is where we can diversify into other synthetic assets, like sCHF, sXAU, etc.
We should be cognizant that there are many potential pools we could benefit from, but we only have the resources to pursue a small number at a given time. I think if we go down the liquidity pool route, we should have assistance from the Synthetix DAO and be aligned that this is a pool we want to have. But, given the relatively low liquidity currently available on AMMs for sUSD, this is something I'd imagine we can rally the SNX community on.
It'd be great to hear which of these, or both, you think are most important to pursue tex