Technically "Know Thy Enemy" feature can be made by any other user? (based on current OXCE build)
Or even if someone wants to make it by himself today - then he have to wait some time for upgrade OXCE power?
I do not understand what you try to say here, without code change no "user" can add features like this.
Change like this will not be added deliberate (like Meridian said) only possibility it happens is as side effect of other changes.
And in this case this should be already possible, y-script have access to research and to aliens units, combining both you could allow
more damage for aliens that was already researched.