I think it would be really interesting to be able to trade and/or gift equipment. I'm in a pretty casual guild and I think it would be nice if I could gift extra sets, i.e. the Red Baron equipment, to some of the less geared members. I understand a system of this type would be prone to abuse, but certain freebie things could be made "non-trade".
From the developer perspective, this might be counterproductive to your business model. If people can get free stuff they might be less inclined to buy gems and gear, but one could impose a small gem fee (around 25 gems the cost of a 3-5* equipment ticket?) to offset this.
What do you guys think? Doing too much?