Ok, so 24 hours in, and some heavy usage on the T480s with Mageia 8, Some good, some bad, some different. So let me go over them:
The Bad:
Installation; I had to reboot a couple of times and go into BIOS to get the 64 bit EFI version to load, otherwise it would give me a locked up screen forcing a hard power off. This is the first Linux distro I have had any issue with loading.
Again installlation, somewhat confusing in adding myself as the "user" and then not automatically having sudo, having to manually install myself in the wheel group. Finally figured it out so no foul.
Installation where I had ethernet plugged in, and it torched the system, after installing updates. Not used to this, but thanks to those here I got past it and installed in off line mode.
Having to constantly re-insert the USB flash drive to install software was odd, and annoying. This is the only distro I have tried where I have had to do that. And the process to disable this is very non-intuative.
The different:
Cinnamon is OLD, 4.8 vs 5.4 on the latest release. I am sure I can fix this as time goes by.
Software is a little older, not bad, but it gives stability.
Boots a little slowly compared to other distros, but not enough to be annoying.
The Good:
Terminal commands- instead of "apt" I just use "dnf" Works great. No having to relearn command syntax like in Arch based distros where you have to sacrifice animals to the Arch gods, and chant in obscure languages to do anything.

Update via CLI, I actually prefer this to the way that Debian based distros do it. More information, and it seems more efficient. Once I was shown how to disable to irritating need to re-insert the USB drive.
Software update and installation via GUI, pretty nice, pretty clean.
UI is clean and well laid out.
I can feel the Mandrake roots which takes me back to 1999/2000. Having been using an rpm based distro it is pretty nice and fast.
I installed Chrome via .rpm package, and it went very nicely, installed right away.
Update to the 5.15 Kernel via CLI was painless.
Stable, very stable.
Shutdown is fast and clean, no hanging shutdown.
Connection to Wifi and ethernet is solid and clear.
I will keep testing, so far I am not un-pleased with how Mageia 8 is handling matters on the T480s. I will want to see how the upgrade process to Mageia 9 goes. I am a hard core and long time Linux Mint user, and so I rate all distros against Mint. So far I can find no real reason to not keep using Mageia, and KDE is very pretty. Almost too customizable.