I understand that, well i wonder if my idea might still work but using something different, ill place it forward and see what you think.
my idea was that now you have the "medal" slot, could this be used for something similar to a stone (this is the part i was going to say to use the likes of lightening dmg 2-5 etc).
i was thinking of things like ruby, emerald, amathyst etc. The way to obtain these items is from mining, ever now and again they drop (lets say ruby) a ruby peice, you use 10 of these peices to create a (s) stone (or item if you didnt want to use stones) these add something similar to the stones we use now like mc0-1 (m) will be 1-1 etc. But to make the equivilant you need say 25 for a m one or 50 for a large 75 for xl an 100 for a holy version. (iv always thought that stones should of been created this way ever since released onto mir).
now in relation to this, id say giving them a dura of around 6/7 none repairable, means its a constant flow of them gping through, then like you did with the christmas event use other items over its place.
I did think of some other stones like an a.speed or pa or slow but keeping them at a +1 or 2 so its not over powering.
this could lead to another hunting area of lets say a cave that looks likfe fox's with the crystals, being able to mine them crystals to create other items, with strenth or anything like that on, or even a luck stone.