As a currently level 73 (kind of high levelplayer?), there aren't any high level monsters that drop i1i2. Azulongs are confirmed i3 drops so far. I've been farming waffle cones, and the rest of the low level mobs looking for i1i2 the past 3 days.
The issue being, I'd like to farm a high level monster so I gain decent exp while farming for it. I could've been level 77 by now(3 days later of low level farming for i1i2 instead of high level mobs) however since there aren't any options for it yet, I've accepted the downside thus far. Lower gold, xp, loot income.
This led me to come up with a suggestion for rune dismantling. If I can dismantle stage 3 runes to lower stage ones, it'd save me the trouble and continue farming high level mobs such as the Azulongs so that I can keep gaining decent xp/coin from high level mobs while making progress toward i1i2 runes.
Let me know what ya think Robby! Personally, I don't know your plans for it quite yet, however, I thought I expose this downside to low level mob farming for high level players

Thank you for your time, as always!
PS: Please ping / quote my message in your reply