I think so too.....I'd love to see MORE destroids aiding the Skull Squadron in the rest of the Macross Zero OVA's. The only time we see Destroids in DYRL they were getting pasted by various Zentradi mechs.
The destroids kicked butt on a few occassions, but mostly they get blown to pieces. But no more than the Valkyries do in many an episode. Still, the MkII Monster seems to get all the glory. It's shown blowing the heck out of everything throughout the entire series. In fact, I think it gets shot once, but is repaired for the next episode.
I just think that the destroids get forgotten all the time. Especially in any debate about which mecha is better, they seem to be quickly dismissed. But they are a very essential part of the UN Spacy's combined arms. They are the reason the SDF Macross had the most potent defense of any capital ship in Space War One.
The Destroids were there mainly because the SDF1 and other ships didn't have strong enough gun turrets on the hull. So the Destroids served as mobile gun emplacements.