Hi there,
I posted this within another topic, but I think it deserves its own.
I think SEOpanel would be a much useful tool if it added graphs to show evolution over time, letting you choose the period. Lets look at the different tools that could benefit from this:
Keyword Position Checker:to show how they change within the time you have a campaing running.
Rank Checker: to see how PageRank or AlexaRank have changed since you took over the project.
BackLinks Checker / Link Diagnosis Plugin: to easily see if you are getting more back links.
I'm picturing similar to the graphs in Google Analytics, a really fast way to look at the data.