dajop - no idea who makes the call but top level of every airline program I have been in has
REAL plusses for top tier over Gold etc.
The new chief might do well to take a good look at WHAT goodies his highest level fliers get. No-one aspires to a mediocre top level. The
Hilton Diamond card you get as a new Platinum Velocity is a
FAR better deal than anything Virgin offers to Plats (IMHO) which is absurd really! And all who have experienced what Hilton offers their top Tier over Gold, realises it is chalk and cheese.
We travelled across India this month and were treated like Maharajas in all Hiltons we stayed in. Large Suites allocated on very cheapest room type booked etc - $A100 rooms etc. And Virgin near refuse to upgrade ANY Plat as a benefit, even if space is clearly going to be available at fly empty. They could learn a LOT from their partner Hilton. ☑
In Velocity - there are virtually no Bennies on Virgin of any real note. A few upgrades useable on insane priced full fares - what a fizzer. You can often
BUY paid Biz for LESS than Freedom fares on many routes! There is no major distinction right now between Gold and Platinum seeing one tier flies
twice as much minimum to qualify, as the other.
All Plats should get a few upgrade e-Certs a year to use on ANY domestic route they book, subject to X or whatever inventory bucket being there when requested. Airline is still in charge, but at least a real benefit to dangle aspirationally to non-Plats = MONEY. Book a SYD-ADL mid afternoon, and BINGO you are upgraded 2 or 4 times a year etc. Worth hanging out for, and a cinch to do operationally if coded into system.
Been YEARS since we as Plats have been offered an op-upgrade at check-in. 4 or 5 years back they were pretty common, on lightly booked biz cabins.
Even if they offered to "sell" upgrades on day of travel for a reduced (50%) miles total, or reduced the $ total - that creates revenue, and makes Plat a real edge to aspire to. 
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