The
most efficient MP is dependent on your gear.
Even if you are oneshotting everything in mp0, you are still potentially limited in mp0 due to the max movement speed cap and the max mf cap. Since the movement speed cap is the same in each mp, the only variable is mf.
Do you remember back in the summer of 69 (pre-1.05) when maxing mf was essential to good drops? This was because mf effects your chance to drop a legendary, and also the chance to roll a higher number of affixes on a rare. This is still the case.
Items & Equipment - Game Guide - Diablo III
For example, if a monster has a 4% chance to drop a 6-affix rare item and you have +50% magic find, it now has a 6% chance to drop that item.
If you have the damage and survivability to efficiently kill and mame above mp0, then it will be more rewarding to do so.
An example from mp4;
Total tracking time: 16h 6m 3s
Total deaths: 5 [0.31 per hour]
Total items dropped: 12906 [801.62 per hour]
- Rare: 2501 [155.34 per hour] {19.38 %}
- Legendary: 22 [1.37 per hour] {0.17 %}
As a rough guide for tweaking efficiency, run for 10 hours to get a baseline figure:
- 0 to 0.5 deaths per hour, then try going up by one mp
- if after new 10 hours, if your total items are below 700 per hour OR rares below 130 per hour OR deaths above 1 per hour, then back down you go and get better gear, otherwise start running in circles and making kaching noises while onlookers point and stare.
The difficult thing is choosing to equip that awesome item rather than selling it. Also when you do get banned, you will lose more $$$ per character. This is perhaps the only good reason to run a fleet of cheap, barely-owning mp0 bots instead. Risk and reward is a whole other story?
So then, the most efficient MP is dependent on your gear and
balls..."I like balls".