Next time, for the first time in SPX history, we will have 3 expirations in one week: on Monday Feb 29 month-end options will expire, newly listed Wednesday weeklys will expire on Wednesday Mar 2, and "regular" weeklys on Friday Mar 4. All of the options expire in the PM. And I have positions in all 3.
Speaking of Wednesday weeklys, the launch was a clear success. On the first day of trading - this past Tuesday, quotes width was somewhat sporadic, but the last few days I see that the width is pretty much like a regular weekly expiration, with volume and open interest also at quite respectable levels.