And no, i will not stop using the term ROI in this forum. What a silly thing to demand.
Masternode ROI is:
(Annual Reward + Capital Gain or Loss on the Collateral) as a percentage of the opening value (in dollars or other equivalent stable currency) of 1000 Dash.
It is not:
(Reward / Collateral)
You can continue to call it that if you like but it's extremely misleading at best and outright deception at worst.
incorrect
You do your terminology, and everyone else will do the crypto terminology.