First, if no new capital coming in, UST can’t be saved. Luna’s market cap can’t fix UST via printing Luna now.
So currently we can only moving forward without UST, use Luna as role of ETH, and we already are(burn/mint, pegging mechanism). UST now actually completely entered free market as a uncorrelated token.
Pay enough tx fee to Validators. And for not looking like a meme coin😅.
I think Terra can survive without its now failed Algo stablecoin. Al least UX way better than ETH(for now).