5-box leveling, balancing efficiency and "safety" ?

[Apatheist]

No area looting that mechanism was introduced in Mists of Pandaria - so you have to loot individuel anyway, to get that silver, so questing+grinding will very likely be faster and you get rep too.

Not AoE looting. Many quest items were changed to be group-lootable by any character in the party that participated in the mob kill during Wrath.

In classic you can only loot one quest item per mob on a single character so you essentially have to do collection quests 5 times.

Once you get a toon to 60, dungeon boosting is another possibility as well.

Another point in favor of paladin tanks over warriors IMO. Paladins are amazing powerlevelers in classic.