Tamriel World space Grid Map Version 1 Legion Outposts Guards and Forts

Here is a the initial work on this project with these mods each added as a separate layer:

ImpeREAL empire - Unique Forts

Better Forts

Forts of Cyrodiil - Reimagined

Legion-occupied Forts

Legion Outposts

Legion Forester Outposts ,, actually used the Revisited version

Under the sign of the dragon - Fort Akatosh Redux -

Under the sign of the dragon - Guards of Cyrodiil Redux -

Forts Of Cyrodill

For sure the largest area covered are from Under the SIgn of the Dragon mods. With Legion outposts really editing a lot around Layawiin and Forts of Cyrodiil really editing the surrounding of Anvil.