Thanks - we aim to have a broader set of chains and testnets, that can all be queried from a single endpoint. We also provide a couple of things that make it easier to deal with media, like cached versions and preview sizes via a CDN. We also pull in active floor prices and collection metadata from multiple marketplaces, even when it's stored off-chain.
We do pass through 3D files when the NFT metadata includes them, but we don't have an explicit search function. This is a great product suggestion though, to do search by media type in general.
Fair question - overall volumes are certainly down from the 2021 highs, but there is growth in certain ecosystems (e.g., Solana). Our view is we expect this space to be cyclical like a lot of emerging technologies, especially as new use cases develop beyond digital art and collectibles.