I really do not think random loot works. it feels very unfair most of the time, as an example i see many players becoming very frustrated trying to get the manuscript recipe.
I think a system where u get points in loot would be much better, this could be varied according to kills, like xp. There could be different categories of points. adv points, epic points, ft points, etc. We could then have a shop tab to spend those points on things like a wt, with the abilty to spend points on lower tiers, eg use ft points to buy an epic item. apparently there is a 2% chance to get a wt on rb so if u got 20 points per adv and had to pay 1000 points for a wt this puts e1 on an equal footing and should work out to about the same reward rate. this would give us something to aim for and hopefully generate more interest. trade/cooperation may increase as ppl work towards a desired goal with specific advs. all the defunked advs that no1 plays may become worthwhile. at the moment i feel lost as i work toward lvl70 and the game is becoming very stale. having goals really gives players a boost and this would create goals.