I've been using Helix for some months now but haven't touched Rust. For that I plan to go temporarily back to vscodium + rust-analyzer + probe-rs which I know is a crazy good combination (no stinky openocd configurations, no gdb and connecting it to one of gazillion debug plugins - probe-rs has its own DAP thingy).

In meanwhile I'll look into neovim and making its selection model more like in Helix. For me it's not about motion before verb... I can use visual mode etc.. but about having consistent advanced commands for refining multicursor selections like selecting in selection, searching in selection, spliting selection to even more cursors or collapsing touching selections into one etc.