For the Employees and Revenue fields in the Competitors section, it would be helpful to allow users to select either a specific value (i.e. 200) or a range (i.e. 100 to 250) for both fields as competitive intelligence is more often than not a guesstimate for these two areas. It would also be great if you could enter a value of "N/A" or something like that rather than 0 if you are not sure yet.
Competitors (and personas) cards are built from custom fields that Aha! pre-populates for you. You can swap out the custom field for Employees and Revenue with a single line text field instead. This will allow you to enter ranges, NA or specific numbers.
See the support note, Capture competitive information, for more help.