We plan on adding support for LSTs (like stATOM or dATOM) into Hydro over the next months, but personally I want to keep around support for LSM shares for as long as the Hub supports it and there is significant user demand for it - some users probably prefer locking LSM shares into Hydro, rather than stATOM, simply because they don’t have to pay the commission on their staking rate (i.e. Stride takes a small percentage of the staking rewards generated by stATOM).
That said, we might very well offer certain features only for lockups that are made with LSTs and not with LSM shares (as I hinted at, working with LSM shares instead of the completely fungible LSTs makes some things technically much harder or impossible), and minting token representations of the locked up tokens would be something in that category.
ETA for other lockup tokens is not far out - if you are technically inclined, we recently finished a PR that rewrites the architceture to support having different voting tokens locked in Hydro. Now what’s left is some integration work for each new token we want to add, essentially getting the information about how much underlying ATOM the different tokens represent into the contract. We’ll likely start work on this for stTokens and dTokens soon.