Well your tool is certainly worth releasing. It's very impressive. That was no mean feat getting the data from the web interface, what with authentication and obtaining the session cookie, etc. If you had time, maybe you could do the scraping via the telnet interface, for other data not present in the web interface. Though the ECI is perhaps where choice is lacking in terms of data scraping tools. And just as with the Broadcom 63xx, the Lantiq userspace API to the line stats is used in a lot of devices other than the ECI, some quite high end, like your(?) FritzBox 7360.
cheers, a