I sometimes wish Hornady would load some 6x45mm with a bespoke 90 gr or 95 gr interlock. (Hell, even a GMX might be acceptable.)
I love the cartridge, but it's a pain to find suitable bullets to work in it (at least with AR mag length limitations).
And, based on the way that their ammo typically performs for me, it would just work.
Plus... I run Hornady and PPU brass for the 6x45mm, to make it easier to distinguish between .223/5.56 and 6x45mm when sorting. So, the brass would fit right in.
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Don't even try it. It's even worse than the internet would lead you to believe.