Absolutely right TT, RTR on ETW is a long way off! We have to get hold of the game and see if it's feasible first, and you're also going along pretty much the right lines with the TIC/FOE comparison.
Wheras TIC is focused almost exclusively on the the Iberian peninsular and has two playable factions, FOE's map covers the western half of the Mediteranean and will have nine playable factions, including the big three, Rome, Carthage and Epiros.
We are also introducing radically new government trees for
all the new factions, as well as a completely different approach to trade and agriculture, which will challenge, diversity and depth to your campaigns. One of the resaons that progress on completing FOE is slower than we would have liked, is because these ideas are a lot more complex in nature than vanilla, and they have to be carefully written and tested, to ensure that the AI can cope with them, otherwise it would be a cake walk for the player - and we ain't having that!
Check the link in my post above, which will take you to a thread that has connections to all the FOE previews published so far. They will give you a good flavour of the scope of our next project (keep an eye on that thread also for the new periodoc FOE Beta progress reports starting soon!).