Looking for Research Topic Ideas Combining Blockchain and Zero-Knowledge Proofs (ZKPs)

Hey everyone! ????

I’m preparing a PhD research proposal that focuses on the intersection of blockchain and zero-knowledge proofs (ZKPs). I’m looking for inspiring research topics or themes that explore how ZKPs can enhance blockchain systems/architectures (for now, I'm thinking about proposing something like developing a formal model and domain-specific languages (DSLs) to describe ZKP schemes as modular architectural components within blockchain AND/OR designing adaptive and interoperable standardized architectures).

If you have any ideas, suggestions, or even wild concepts that you think are worth exploring, I’d love to hear them! Whether it’s related to privacy-preserving smart contracts, cross-chain verification, DeFi security, or anything else involving ZKPs and blockchain, I’m open to all ideas.

Thanks in advance for sharing your thoughts! ????