If I could make a suggestion then it would be nice to have the option to place the form code as a widget so people can place it where they want, in the sidebar or footer of their websites and on their own landing page.
I've seen other similar softwares allow this (not PPC ones) but local marketing reports for online directories, citations, etc.
Aside from having more control over the page the testimonials at the bottom of the page aren't all the relevant and the date is wrong (it says 2014 still).
The testimonials discuss the software, not the report which is what is important. People don't care about "cool software". They care about the money they are losing from having a poorly optimized Adwords campaign so that is what the focus needs to be on.
The ability to do a search/filter for a phone number. If I can't remember the date range the ability to do the filter using date range will not help, but if I know the number I could just do a search to find the call(s) from that number. So having a phone number search would be great.
Voicemail Drops. I think it would useful to be able to leave voicemail messages for a business without ringing their phone. It would help bypass gate keepers if the business owner listens to the messages.
Keyword tracking has been a feature in ACT for quite some time allowing you to have a pool of phone numbers which sets a unique phone number to a keyword. When the web user lands on the landing page this unique phone number is shown, however, if the web user clicks on another page, the default number is shown instead of the unique phone number from the pool that's mapped to a keyword. This feature would make it so that the unique number would be stored in a session cookie and would be shown on any page the user visits. If you think this is a needed feature then please vote it up! If you would like for this feature to include certain parameters or filters then please add a detailed description in the comment.