When you consider how fashion- and trend-driven music is the optics of tickets getting slashed in price because they haven’t sold for a month are terrible.
Have you seen how the dutch flower auctions do it?
Those guys have something like 30 seconds max to hit their mark.
Now those are professional buyers. I think for your amateur crowd you would have to provide a bit more time. perhaps a week. just make it clear what is happening.
And that big clock, have you seen the big clock? if I ever made a dutch auction ticket site A big clock would feature predominantly in the ui. Unfortunately I don't think the flower auctions use the big clock anymore. which is a shame.
There is nothing embarrassing about a Dutch auction. What's the point of generating hype by selling out tickets? All of the tickets get sold out either way, it's just that now more fans end up with tickets instead of scalpers.
The next location or tour people are highly incentivized to snap up the tickets as soon as possible rather than waiting. This can't be the first you've heard of such a strategy.
If it sells out either way, then you will want to buy it before it sells out in both scenarios. It's just in the action scenario you can be sure you will get a ticket.
Buyers do not behave rationally. Without the induced sense of urgency some portion of buyers are going to think better of the purchase. So there is a risk it will not sell out either way.