Ok so there has been a lot of talk and frustration about class 3/4 and opus tomes. The core of the problem is that these tomes require a linear progression where you have every tome of a type. For most loot you can miss an item and its no big deal because eventually something even better will drop to take its place. With tomes that doesn't work because if you are missing a previous tome in the line you cant use a later one.
Turuj is supposed to provide lots of tomes, but so far this is not the case (hopefilly it is or will be fixed so ill ignore that issue) Even with a fix to the droprate there is still a problem with them all being random no drop (and many class-specific).
Most people seem to think a token type system would be best, where tokens drop in the place of tomes which can be turned in for a tome of your choice. Even if we could turn in 2+ rot/bad tomes to get a desired one, that would at least allow us to fill holes.
I think the above token system would be best, but I can also see the reasoning for having random tomes (people actually get/do stat and resist tomes, rather than min/maxing to get all the better ones instead). If this is really desired, would it be possible to add some sort of additional token or similar style system that provides a rare, but choice tome. The main purpose of this would be to fill in the gaps where people are just having bad luck.
An example of this would be: quest items dropping randomly off trash that can be turned in somewhere (refuge probably makes most sense) and for these you can buy any class3/4 or opus 1-2/3 (anything that normally drops in turuj). The catch is that only enough quest items drop to give 1 good tome (resil/mind/racingthoughts/class) or maybe 2 stat/resist tomes per clear.
Assuming the tome 1 drop rate is fixed, this would leave the tome drops mostly random, but allow deserving individuals to get those certain tomes that just would never drop.