Re-read the topic, which uses such words as 'bonus' and 'benefit'. Note the words 'open only' appear in the op's post exactly zero times. But, it's okay, you do you.
What... how.... but he is perfectly
right!
"open only" was never mentioned by the OP and I didn't read his proposal as an attempt to propagate it! It was about an incentive to increast the
allure of open mode, not make it mandatory!
And personally, I wouldn't mind in the least if there were such a benefit for playing in open.
In respect of how it could be done - well, easy enough I guess. At least "easy" as it would be the same game mechanic as the one to be implemented for "Open-Only Power Play":
Add an internal flag to any transaction done in open mode. As long as this flag is set, the commander will earn 10% more when cashing in.
As soon as the modes are changed to solo or PG, delete the flags; the earnings will just be standard.
The real problem with this suggestion is human psychology (and maybe the mindset of modern gamers?):
Not getting benefits for something is actually percepted as
taking away something from the player.
So the dicussion will not be: "Oh, i'ts awesome that I will earn
more when playing in open!", but "Screw you FDev, you PUNISH me for playing in solo!"
And this is, why we can not have nice things ...
--
Edit:
However, I perfectly agree with the statement that open has serious problems other than the danger of gankers (which do exist for sure, but are overrated imo).
The mentioned instance refreshing for CGs is one of them and the reason why I do them in solo, too.
Pad-blocking is another one - but this is beeing looked at (independently to open-only PP).