I am not talking about grindable reps from kills, many reps are limited to only a limited about of daily/weekly quests.
Ogri'la rep is one of the worst (yes it's easy, it still is gated to a few weeks if you wanted it), and has zero methods of speed it up, 10 years later, timewalking tokens don't exist for that one.
Netherwing also took weeks back then when everyone was doing it.