@GTANJ I'd also like to note that YoshiP has said add-on support is coming. 8 months ago:

Reddit: Here’s a question that’s asked a lot. What’s the current state of the API for addons?

Yoshida: We’re still in development. It will still take more time. We’re thinking maybe after the launch of Heavensward we may be able to give you a visual reference or a screen layout of some sort. Of course having to have patch updates go on at the pace we’re going at any additional side projects that we work on tend to take a bit more time. But of course we’re inching slowly closer to making it happen and we’re continuing to work on it.

https://www.reddit.com/r/ffxiv/wiki/pax_2015_interview