With the GX4816 unable to have ears mounted on the rear, or moved further forward. I’d like to see an option for deeper rack ears to get the rack 4-5inches more into the rack.
This allows connections to be further inside the rack or have the opportunity for patch panels to be in front.
Ditto for the other expanders.
Of course this would mean having to have a deeper rack casing, but that’s not too much of a problem.
I have no experience with this product, but I think it will do what you want (or maybe two pairs of something smaller for the GX, since this is 4U and I think the GX is 6U)
https://www.bhphotovideo.com/c/product/1736300-REG/kendall_howard_1924_3_001_04_4u_adjustable_standoff_bracket.html
Or google “rack mount offset bracket” if you want other options.