I like to request the enablement of "Broadcom 2.5G" and NOT to be confused with MultiGig via Aquantia or the likes.
Obviously, this is a niche request to support the very few SFP modules that sync at such speeds, but they do exist in the market, such as: https://www.sourcephotonics.com/product/sps-34-24t-hp-tdfo/
or any powered by an Intel® FALCTM ONT GPONSFP PEF98035 Chipset PEF98035ETV13 S LLC5.
Such modules do work when the interface is configured with: speed-duplex 1000-full as auto configuration fails but are not running at their default data throughput of 2.5Gbps.
As you're aware the ICX 7250 8 SFP+ ports are divided by 2 WarpCore's, 4 SerDes pairs per core, and us mere end users can observe as much by running the simple command: phy 1/2/1.
And from my past encounters with the WarpCore, it's feasible to run native SerDes 8b/10b 3.125Gbps to achieve a data throughput of 2.5Gbps and most definitely so when the right bits are set, eg.https://community.broadcom.com/communities/community-home/digestviewer/viewthread?MID=698164https://www.dslreports.com/forum/r32230041-Internet-Bypassing-the-HH3K-up-to-2-5Gbps-using-a-BCM5781...https://www.dslreports.com/forum/r32393899-Internet-Bypassing-the-HH3K-up-to-2-5Gbps-using-a-BCM5771...
Hopefully this request doesn't fall on deaf ears and speed-duplex 2500-full works in a future firmware release.