The way I see it is, get it if you want, ignore it if you don't. Either way the game will have to take care of new players who pick up the game after 3.0, meaning the Lucis will not be required to reach the same footing as everyone else in the 3.x end-game. If you like the idea of being the owner of the Lucis tools, then get them.

As with the Relic, they will give consideration to holders of the Relic weapon, hence it's reasonable to expect some consideration to holders of the Lucis tools when in 3.0 or 3.1 we reach end-game crafting.

Beyond that, nobody, absolutely nobody, outside of the dev team has anything solid. So in the end it's your own decision. I do want to say, though, it's a game, you'd be better off playing the game and stop worrying about if something's "worth it" or not. In the grand scheme of MMORPG expansions, nothing's worth it. :3