@Jorge that's a cool beginning. I have a few ideas...
• How is the data collected? As you say, a daily/weekly update or so would be cool.
• Real power comes from comparison, I would plot everything in one graph. That needs a few more features:
◦ Ability to select plugins to show, all of them will be overwhelming.
◦ Ability to plot either time of releases or releases as ordinal axis.
◦ Ability to plot number of downloads either as linear or log axis.