As said before, going from Platinum to Private Clients or Private Wealth means that you need a lot more money in your FNB account to get to the lvl 5 rating.
It really is a trap unless you can keep a couple of hundred thousand in your bank account for free ebucks. The interest you'd get on that cash in equities or somewhere else makes the Ebucks rewards look weak in comparison.
It's actually not that hard to get RL5 on PW. It's just playing the game by their rules.
The only "special" things I've done is...
1) 2000dollars in a global account
2) 50k in an investment account
The rest is my normal banking behavior... And no I don't keep "a couple hundred thousand lying around" as that would be silly.
The benefits are typically 19-25k in ebucks each month and that's without too much spent on fuel - I work from home.
My fav benefit is my "free device" as its R469/month and I get to write that off to tax as well!
So the cash I have sitting in the investment+global accounts may not attract huge interest, but the ebuck benefit seems to me to be good!