Technically speaking, Robotech isn't "anime", it's "Japanimation", which is the practice of re-editing (and sometimes even rewriting the basic story of) anime properties for a Western audience. This was done with the anime properties behind Robotech, Voltron, and Battle of the Planets, among others.
And I wouldn't suggest even MENTIONING Robotech among hard-core anime fans...it's not well regarded to the point people get extremely and vocally upset when it comes up. I've personally been a victim of this both on-line and face-to-face.
About the OPs problems with Shadow Chronicles...it had a lot to do already, being essentially a pilot for a proposed new series. As a pilot, it had the unenviable job of establishing the base characters and setting, at the expense of on-going plot development (though we DID see some advance in the Scott/Ariel relationship).