I tried Helix two years ago, unfortunately the default keymap was a bit frustrating to me. I don't mind changing my habits, however I had difficulty I made sense of the keymap design.
For example, typing `w` select the word. However, typing `2w` select the second word and not two words. To select two words you have to enter in visual mode (`v2w`). To remove two words you thus need to type `v2wd` or `wdwd`. In Vim you can type `d2w`. I miss this composability. In Kakoune (one of the main inspiration of Helix), you can type `2Wd` (`2wd` has the same behavior as Helix).
I was also hoping that the use of Ctrl/Alt modifiers be completely removed. Why not fully embrace modal editing?