Improvement ideas for the code

[Nealsen]

Ensure robust error handling, especially for functions like aggregate3 and tryAggregate, where multiple calls can fail. Providing detailed error messages or logs can be helpful for debugging.
In cases where allowFailure is true, consider logging the failures for better traceability.
Optimization for Gas Usage:

Analyze and optimize gas usage, as multicall functions can become gas-intensive. This might involve optimizing the data structures and minimizing state changes. For functions that involve sending ETH (aggregate3Value), ensure that the gas cost is justified and well-managed.
Security Considerations:

Reentrancy guards: When dealing with functions that interact with multiple external contracts, consider implementing reentrancy guards to prevent attacks. Check for any potential vulnerabilities specific to batch calls, such as the order of calls affecting state in an unintended way.

Rigorously validate inputs, especially addresses and call data, to prevent invalid or malicious inputs. Consider adding limits to the number of calls that can be batched together to prevent excessive load or potential denial-of-service attacks.