Upside.....public acknowledgement of a financial commitment/dedication.
Downside.....distinguishing visibly between those who can and those who perhaps cannot due to circumstance.
If it's a specific title only available to level 4 and NOT mandatory [in other words it can be hidden if desired], as with existing titles then I'd stick my name on it.
If it's a prominent 'badge' that cannot be hidden if wished then I'd be a 'No'....