Buddy,
let's work together,
I assume we can make it.
Theoretically speaking,
1. you and your teammates may use brainstorm to get potential dimensions;
2. you may divide one dominant dimension into two;
3. you may identify the closest variable relating to your current three dimensions.
With very limited information,
let me guess,
in business world,
we normally use efficiency and effective dimensions to evaluate system's utility.
Here is my suggestion:
time,
input (budget, capital),
output(amount, class, on time rate) .
turnover,
ROE, ROA, EVA etc.
I hope it helps.
Thank you.
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