I believe this is the work-around that SEGA will use to ensure they are not seen to be 'selling' super rares.

For example, having meseta for sale is wrong, having a Spread Needle trade in for Arks Cash is wrong... but buying something like 3* gold luck that gives better drops would be seen to be fine.

So, those with the money/time, could spam these missions over and over with a better chance of getting the drop they want, plus better meseta drops etc...

IF they choose to go with this model - would you be happy?

I personally can't see them not taking this route.