The situation is this: Basically, I have a table which users have to fill up. The fields in the table are either numerals or alphabets. Typically, a user will use the Tab key to traverse the table. But after understanding the user more, our team found out a user pattern which is quite prominent among our users - that they use the number pad very frequently for numeral values. People who work in accounting should find this very familiar.
In short, should we allow users traverse using the Enter key, an add on on top of the Tab key.
Personally, I think there really isn't any harm in doing so and might be a good opportunity to improve the UX of the system I'm designing.
I'm assuming there will be some challenges to usability but don't think they actually make a good argument against this:
User maps the system's functionality to Excel spreadsheet. The Enter key actually moves downwards along the spreadsheet while Tab moves across the spreadsheet.It is minor but still, inconsistency with their expectations.
Enter can be used to submit a short form, meaning there will be separate behaviors for a single Key.