I just started to use ODK Central and I am really impressed by it. However, in my opinion, there are a couple of things that could be improved:
1.) It is not possible to delete records in ODK Central. This is necessary for data entries with errors or if someone enters "training data". It is not really feasible to do that on the DB level - the data manager needs to remember which entries have to be deleted or one needs an additional form/paper to write down these data entries.
2.) The filter options for submission data should be more sophisticated. It would be very beneficial if one could filter/sort by every single column. I am aware that this is possible on DB level, however, it would help a lot to have the possibility of doing it directly in ODK Central.
Is there any chance that these points are improved in a next version? Is there a timeline for these functions?