This is not a so bad idea, would be really helpful and nice to have a hope to gain good additional attributes every now and then.

I get more or less one red gourd each week, I am a bit unlucky because I can do 25 TI each week, so if one of these red gourd has a chance to get a good additional attribute, the chance will be really low, it's not a life changing gift to have this hope in my opinion and the game surely will not be unbalanced.

The main problem here is that I find a bit illogic to give to us the reforge function without actually any good reason to use it, beside the tool essences we got from the Ultimate training, and I read that many players still haven't used them because they are waiting for better TI (Kage TI) which should give red tools with better stats like the Red Gourd.

So to sum it up, I think that this is a good idea to better valorize the reforge function and balance the ninja tools system a bit after all the changes we had in past.

I hope that our opinion will be taken into consideration ^_^