Being a proof of stake doesn't change that much with its use case. Many projects still uses it and I think that the foundation that it has set has made it even better. The use cases were never gone and it's still good as it was. The dominance that it has got in the altcoin market is still good. And no matter what we see on it that it's getting better, I agree that it still needs Bitcoin when it moves. Because without it, we'll mostly seeing another affection that it has got directly and the movement of it will be slower.
There were lot of expectations that moving from PoW to PoS will bring lots of improvement in Eth that will result in it's price but that never happened. Moreover the Ethereum coin supply in circulation has also not not gone down rather
gone up which is a big question mark on efficiency of PoS consensus algorithm. It's a good opportunity for people who have bought Ethereum at lower prices and buying Ethereum at current price is not recommended because Ethereum is very much dependent on Bitcoin price for it's bull run.
Well, those who have been buying at the current prices could hope for a better price in the nearest future. While we're in the bull run, there's some pump that it did but it's not that match. IIRC, it's just par with the 2021 bull run in terms of its pricing. But I guess the real thing about its transition to being a POS is in the long term impact of the project itself. We might not see how it goes for now because we only reflect to its price but no one knows how it will be in the next years.