Many of them fail to implement macros in my experience. Though I've heard VSCode got this part right.

The most productive vim keybinding I ever came across was:

    noremap <Space> @q

Since the key to start a macro is q, you can quickly tap qq to record a macro to the q register (end it by pressing q again.) Then by whacking the space bar you can execute the q macro as many times as you'd like. Once you get into the rhythm of using it often even for small tasks, it can become a great optimization. Sometimes I use it with five or more different macros in a single minute. If you ever look forward in time and see that you're about to perform the same edit two or three times, pressing the q key three times total and the space bar once per execution (or only once with a count) will often be fewer keystrokes than had you performed the edit manually each time. Not to mention triumphantly smacking the space bar to repeat an edit is a great feeling.

(Simple edits can be repeated using . which is another indispensable vim feature that sometimes gets missed by vi-plugins in other editors.)