As referenced above, Row sums/totals can be quite useful in what my organization uses regularly.

While I (on some level) I can understand why it’s not an option for totaling unique users (although allowing totaling with the understanding about de-duping is preferred), it would be quite helpful if row totals could be available across more charts/tables/etc. in Amplitude, if not at the very least in event totals.  

For my specific organization, the ability to sum up totals across multiple smaller time periods into a larger time period is quite helpful.