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I think upping the PHP memory limits a touch would be no harm. Especially on Silver Plus and Max.
The jump to your next hosting level is way too much and not at all competitive with other companies.
I am at the point where I am going to have to switch sites away from WPMUDEV which is a real shame.
I think the ever growing size and capabilities of things like Elementor mean small PHP memory is a deal breaker for smaller sites on smaller budgets.
Just something I wanted to note and see are there any plans in the future to up the PHP memory limit