I bought the D&D 5e book Eberron Rising From The Last War. I saw there were magic items in it, and in particular prosthetic limbs. That reminded me of a prestige class, the renegade mastermaker (Magic of Eberron), in D&D 3.5, the point of which was to (sort of) become a warforged.
Then I saw that armblades (and similar magic items) are only for warforged, my idea was crushed.
The advantage of prosthetic limbs is that they are cheaper than a regeneration spell, but they require you to be attuned (which is, for me, a big cost). Why not make it a little bit better by saying that it allows you to attune to armblades, (and similar magic items) even if you are not a warforged?
Would that be unbalanced? If so, what did I miss?