I second (third?) Richard and Jon. I use <s[TAB] very frequently and I appreciate the simplicity.

On Mon, Apr 30, 2018 at 1:37 PM, Richard Lawrence <richard.lawrence@berkeley.edu> wrote:
Jon Snader <jcs@irreal.org> writes:

I use the <s[TAB] mechanism all the time and /definitely/ want it enabled. I don't want to have to deal with a menu and its more complicated calling sequence

 I feel the same!  Please don't disable <s[TAB] or make it more complicated to use.

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Best,
Richard