I suppose I was leaning more towards the rareness of the Wondrous Tails having 5 slots. I don't know how hard Ultimate will be, but if very few people will be able to obtain the weapons from it, then the rareness should be equal to or greater than that of Wondrous Tails. Thus, if it is as rare as the WT 3 line rewards, I feel the slots should be equal in number. I also think skill should be rewarded higher than luck, thus 5 slots at maximum ilvl would fit that. Just my thoughts on it.