That was my first thought too, but there don't seem to be enough devices to where the relay would NEED charged like that. Perhaps it's a sign of things to come (or maybe others actually stress it more).
On another note, I've noticed that my wife's progress tab has 5 entries in row 5 while I only have 4 (Lumen Storage, Unity of the Elements, Magic Alloying, Broadcasting). I had her start an SP world and cheat in achievements and it looks like it's 'Other Worlds'. Anyone have any idea why we'd have different entries available? I'm hoping the only thing she needs to unlock it is a visit to the twilight forest (that and beating the ender dragon are the only previous achievements she's missing), and her progress is stalled because of it.
If Reika still checks in on this from time to time, my wife came up with an idea earlier that I think I've seen here before, but I gave it some thought on how not to make it 'too easy'. Basically since you're always hurting for one color of crystal *cough* Tahara *cough*, a way to change the color of a crystal to another type. I was thinking since we already have a way of removing their color (to raw crystals), if we were able to throw those raws into the chroma+berry solution, that'd be a semi-expensive way to convert excess crystals into Tahara (or whatever color you may need). If that seems to easy, requiring them to be iridescent makes it a fairly resource-intensive task