MBA, the devs have a complex logarithm that calculates who gets drops and who doesn't, it is suppose to be random, but nothing is random with computer programs
Outback, yes you would, even though the summoning circle gives 5% more plunder, all T4 level 3's give more plunder than there T3 counterparts, likewise with T4 to T5, the spy builds are different though, those are tricky
After the initial 69 quests are completed, there are no more quest rewards, but you can keep doing them for the chance of a random crystal drop, or the occasional nobility point, the rate on both of these are really low.
Question: if you played KaW in say early 2010, then stopped playing, got reset by the devs then starting playing again, which join date would you see?