The fields on the competitor detail should be click-to-edit like most other parts of Aha! Instead, when you click you're brought to a field editor that shows your fields in what appears to be a random order. It is very hard to edit a piece of information when you have to search after clicking every time.
Thank you for the request. We recently launched a feature which allows you to adjust the layout of custom fields in the field editor (so that it can appear in a more logical manner). You can find this via Settings -> Account -> Custom field layouts. You can read more about it here: http://blog.aha.io/account-level-custom-fields/
At this time, we're unlikely to make revisions for in-place editing but we do hope that this layout feature can help.