But there is legacy armor that you can transfer via mail, and all companions can use it, especially armor that is not class bound (like makeb legacy armor and BBA armor in cartel bazaar)
I have Treek on different chars and every time I want to do hard things solo I just transfer legacy gear from one char to another, so I can equip it on Treek. I don't need to gear up Treek for every single char I play, I can just use the same gear I transfer via legacy. So thats what my suggestion was. Since droids cant use normal set parts (like head pices, legs, chest, etc.) why not putting legacy moddable (orange) armors in game, or just make that drioids can use normal set parts.
Since droids are really important part of SW universe, so why putting them in game, even as companions, when now they are just pretty useless (you can't put best in slot armorings on droids cuz they are not craftable, and drops armorings are bound to set pieces - driods wear different set pieces)