Depending on the amount of plugins installed, using a slash command might return a very long list. Personally, I only use a few things from the slash commands (more as a quick way to access commands while writing). It would be great if we could choose which of the commands in the command palette should be accessible in the slash autosuggest.
Adding toggles (perhaps similar to how quickadd does it) to any command (core or third party plugin)
Type more precise commands (e.g. avoid the word Toggle)