Agreed, but if the population of people who have 3 - 5 slots of materia are around (let's say) 1% of the worlds population then it's not going to be a big deal or even matter because it will be so very rare.
Now, let's say if everyone (or at least 50%) of the world's population has 3-5 slot materia then I would be inclined to agree with you. Because then it could be expected that the people you are playing with have X amount.
It's all going to come down to how easy is it to attach 3+ materia to an item, if it's easy then it will be expected, but if it's really difficult then it will be considered something very rare.
I for one hope that it is very difficult, that way when someone does get that crab bow + 3 with 5 slots it will be a labor of love and luck. And since the game is shooting to balance itself to a 1 slot (100%) rate then players shouldn't feel cheated.
I do feel that the risk of losing gear is high, but at least they will tell you your success rate before you even start, if they didn't do that, I would be on the other side of the argument.
