Unless there are pressing issues needing TSC review (please let me know if so), I might propose adding a (short?) discussion to kick around idea for tables/grids in Collect. Although technically 'ice-boxed' on the roadmap, this feature request seems to keep bubbling up to the surface on a regular basis, so it might be good to at least discuss if this is really something we feel the need to support eventually.
There's an ongoing ODK thread about this here: Form design: grid of text or numeric input
For lack of better alternatives, I've added this for discussion to this week's TSC call, assuming we have time after reviewing roadmap/parking lot changes (I suspect Validate discussion will be bumped due to lack of quorum)