Trading/gifting is a terrible idea.
It will destroy the gameplay and flood the game with far more hackers than we already contend with.
People will hack the game mercilessly and then use out of game means to turn it into their own form of pay to play, selling trades on eBay and such...happens everywhere else. This will take even more money out of GREEs pocket book and ultimately spell K&D's demise. While many might debate how well GREE thinks things out before doing them, they have gotten this part correct already, and haven't gone down this mistaken path in any of their games.

Let's be honest for a minute here: we already had a long standing member of this forum and game who snuck by GREE for quite some time, get banned (cough k cough i cough n cough g cough), while dishing out advice and doing quite well week in and week out in both the arena and epic boss. He was a part of what is the largest and most established guild in our game to date. So this crap is already present and sometimes not as obvious as...let's just call him Zizzle as he is a bit too hyper to mention his name. Further, there are guilds out there with relatively brand new members who have purchased in excess of 20 elemental upgrades...somehow that seems a bit more than highly suspicious to me. And yet some people are beating the drum to be able to trade mats or armors?
What's the point in playing if we not only open up the doors (that people already have lockpicks to) but knock down the walls and invite this crap into our living rooms?
The answer would be none.