Well MSI X570 is offering same intel nic (211AT) as all competitors + 2.5gbits realtek as all competitors at similar price range (I will test if it makes any differences)
I appreciate MSI X570 ACE I/O as it's not using additional chip that requires additional time to boot. X570 + Ryzen 3000 are offering a pretty good I/O.
MSI X570 ACE VRM are pretty strong...anyway even Ryzen 9 3950X won't use more than 384w on load.. We don't need level of crasy VRM of top end of intel X299 or Threadripper that can exceed this limit of 384W (equal to 1x8 pins cpu connector)
But anyway, best feature of MSI X570 ACE is this zero frozr feature (semi-passive cooling) on X570 chipset.
Maybe I was mistaken then, I thought that the MSI X570s were 2X realtek (Killer) nics from the spec sheets that I saw. If that do have at least 1 intel, that would alleviate some of my worry. I just know that on my current Z97 gigabyte board that has both an intel and a realtek nic, that the intel one has about 100 mbps higher bandwidth on the same connection and better packet prioritization. Realtek may have solved that issue on newer chipsets, but I've only bought boards with intel nics since as a result.
I'm not sure that I agree with you on the VRM standpoint. Sure the Ryzen package wont be pushing threadripper levels of power, certainly not like the 32 core variety, but the less concentrated heat, particularly in SFF chassis that don't usually have direct air flow over the VRM area, can be a significant boon in clock stability and vdroop mitigation.