Any benefits to taking crafting all the way to 50?

UncleTaint

I'm currently approaching 40 for most crafting skills. I've been religiously dumping skill points in as I level up and I noticed: All the top-end skills (that I care about at least) seem to be unlocked at 40.

To the best of your knowledge, does grinding past that affect anything?

The only possibility I can come up with is refining/deconstruction outcomes may improve, but I don't have any solid evidence of that being the case.

fromtesonlineb16_ESO

At this stage in the game, no. If you expect ZOS to expand crafting later then taking it to to 50 now would probably be a motivation, but right now 40 is the cap as far as skills and abilities are concerned.

Deconning results are based on your character level, and only then it seems to affect the rate of your getting the base material (ingots, leather, cloth) not tempers, gems, etc.

Isibis

You get nothing above 40 right now, however some achievements will depend on in after update 3. So might be worth getting there to unlock a few dyes, but not having it won't make you a worse crafter.

skeletorz_ESO

Wrong. Taking your crafting skills past 50 affects several things including the exact nature of the materials you receive from your hirelings and likely how well you extract materials.