I crafted a few Tigrex pieces, although because the Beta pieces were more useful to my build I ended up not actually having any points in that "free use" skill at all.
Really though if you've played the base game you already have more resources than you could probably ever hope to use, and if you need more than 20 Mega Potions to kill anything you have other problems, so it's not that useful of a skill. The "fast eat" skill is extremely useful though.
I'm not quite sure how to actually improve on my build. Right now it looks something like:
Rathalos Helm (beta)
Tigrex chest (beta), arms (alpha), and waist (beta)
Barroth legs (beta, useful for having three slots and stun resistance)
With my slotted gems + charm I have max level critical eye, level 4 attack boost (combined with critical eye that's a 45% boost to affinity), non-elemental boost, level 3 earplugs, level 2 health boost, affinity slide, level 2 evade extend, level 3 evade window, level 2 speed eating, level 2 stun resistance, and resuscitate (surprisingly useful considering how many enemies inflict some kind of blight).
I'm using the Rafiq Al-Nassir II long sword (which you can make surprisingly early considering its rather high raw damage and 25% affinity). With the non-elemental buff plus all the attack buffs I have a raw attack rating approaching 1,000 with 70% affinity (if I'm in an area with a slope I can boost this to 100% with affinity slide), plus a bunch of other stuff and the flexibility to sacrifice a bit of affinity/dodge ability in exchange for anti-whatever skills. Not sure what in the future I would want to swap anything out with. Some monsters in the Guiding Lands seem to have stuff that would be a straight upgrade from what I have, but that's still a while away I think (I just unlocked MR 4 star quests).
