I wish you the best of luck and when I am able to be involved with OSS again, I will gladly help out with Redict. I think the LGPL is a good choice.
Areas where I would personally want to see Rust in a project like this, a) parsing and talking with the network b) extension mechanism moved to Wasm (Wasmtime for execution) but that plugins would be moved into a Wasm container.
It would also be a nice property if the core of the project maintained a compile to Wasm compatibility so that Redict could be run everywhere.