well eventually downloaded all factions mod.
(took about 8 hours!)
then had the fun of installing it. seems simple - but the directory structure and the way windows copies files had me confused for a while. (kept putting the files a level lower down the structure but eventually got it right.)
OK assuming it was installed properly (and it was on vanilla gold edition) problems:
well i got a CTD after about 12 /15 turns - clicked the end turn symbol and plonk - desktop, RTW-BI not even runnning. killed stone dead. reloaded the autosave and it did the same at the end of the turn.
the quality of the new skins is very good and work well. there's new units for the romans which i didn't get too close a look at as i was too busy fighting them.
started campaigns as slavs and lombards so that works.
the new settlements seem to work OK - but would need to do extensive testing to check them all out.
the description of the equites cataphractae (sp?) had no weapons / armour stats - just "?". also the description was of a rider and horse covered in armour but the picture had a horse with no armour.
i've uninstalled the mod for the time being as i'm also testing bug-fixer and i suspect that the two might interfere with eachother.
be interested on hearing other people's experiences with this mod.