One thing: don't expect too much from the A-G radar. The pilots don't like it and don't use it much, it's a tiny radar. The most you'll get out of it is slaving it to landmarks and infrastructure, not individual ground units.
The DBS modes are reliant on you going off-angle. The further off angle you are, generally the better the image will become. Still, even then at short range with the highest manual zoom you can get (range scale on the top-left the lowest) you will still struggle to identify individual vehicle-sized units. It's best in this case to use the TGP in conjunction with the HMD
Pretty much every map short of the WW2 ones and Caucasus see actual F-16 operators, so you can pick whatever you want in that aspect.
South Atlantic has Chile which operates F-16AM/BMs and a couple of 16C/D block 50s without AMRAAMs, HARMs and L16.
Syria of course is the holy grail for F-16 flights, with plenty of combat service with Israel and with Coalition nations against ISIS, including block 50s from the USAF. Even for the older scenarios with Israel the block 50 makes for a decent stand-in when you disable the HMCS and turn off DL.
Persian Gulf has the UAE as an F-16C Block 60 operator. The USAF has a strong presence at Al Dhafra AB, though not with F-16s but they visit for exercises sometimes. The 480th FS was there in 2020 with their F-16s.
NTTR pretty much goes without saying. The USAF Weapons School at Nellis AFB uses all sorts of F-16 variants with the 16th WS. Red Flag exercises also bring plenty of F-16s around.
Marianas is in the same vane as PG. The USAF operates from Andersen AFB on Guam which hosts exercises involving the 13th and 14th FS F-16s from Misawa, as well as other PACAF F-16 squadrons from Korea and Alaska
/nerd
I can strongly recommend both Syria and PG for a realistic setting for the Block 50. The Gamblers campaign coming for the F-16 made by Baltic Dragon is set in Syria, and overall both maps have a lot of community content.
Yep, they improved it to be a lot more similar to how it should be IRL. The CAT-III we had before was akin to flying an airliner even with little ordnance on, now it actually feels like a fighter even when you bring a heavy load. It's gonna take some getting used to, when you do get used to it it's a joy.
LieutenantFalcon's post in F16 Ground Radar (GM) - How to build a clear picture was marked as the answer