Super quick, super easy. I miss being able to select an item level for gear previewed in the BiS section of your site. Currently you have the option to select by M+ level, but where this falls short is that if I want to compare future upgrades to my current gear – for instance if I have a M13 sword and I want to see how much of an improvement the M15 version will be, or see how big a DPS increase different corruptions provide across Mythic levels, it’s very hard to do this.
In versions past, you were able to select an item level for individual items, and it would immediately update against the rest of the item pool so you could see the percentages. I’d love that feature back on a per-item basis, rather than simply a setting for the entire pool.
And by all means, having a filter like that that immediately updates the entire pool to a specific M+ level is still a very handy tool for other applications.