Here are new flags for Third Age : DaC (it's completely save game compatible).
Dac v4
This can be downloaded here then just extract into your Third Age mod directory.
Note for v4: The only limitation is that for High elves keeped the Icon for Lindon.
All credits goes to b0Gia de Bodemloze for this update.
Old Link to Dac V3 Faction Icons
Old Link to Dac V2.2 Faction Icons