So as far as I can tell, the Cu Pa toy and the Imperial Guard (Along with other holo rewards) were added in patch 20. As far as I'm aware, the base of the holograms also didn't exist before the CU, either. I might be wrong, but I looked multiple times now for this kind of stuff over the past few weeks and never found any evidence for it.
That said, the 'blue glowy' effect is definitely possible in PreCU, it's just a matter of, what do you want to use it for, which determines if it needs client (.exe) expansions or can be done via the files, using existing .EFT effects or having to modify/make new ones, etc.
Now, just to make a comparison in terms of what might not be as straightforward necessarily to get into PreCU, is something like 'heat' effects or perfectly recreating the lava effect on PreCU, then again, it might be, depending how it was used internally in the NGE and how much you'd need to expand the PreCU client on.
And yeah, planets, Hoth, whatever, totally doable via SWB in the future, so don't worry about the possibility to create planets. All that kind of stuff is covered, or will be covered.
P.S. Just saw your P.S., yeah, they musta added that reward later on in the CU, like, I def don't see it in the files, which is a shame, but as I said, that by itself can be replicated/ported without too much issues, look on page 1, I basically faux turned an existing furniture piece into a hologram.