Rotor: Sounds interesting so far, keep up the good work. If you're looking for decent battles with Numidia, look elsewhere. The best armies to take them out are mobile, easily flexible ones. Size is not a must, but you'll be doing a lot of marching through the desert. Also, since Egypt almost certainly has Siwa by now, they have only two coastal provinces; their capital and Tangier (forget the actual name but it's something like that). Blockade them. You could probably defeat Numidia by attrition and have them become your protectorate, now that I think about it.

As far as the Carthage City situation goes, it's smart just waiting for them to starve, although they may sally at the last possible instant. Be ready. When you finally do take the city, exterminate. Otherwise you'll be dealing with problems throughout the game. Don't forget to demolish that Temple of Baal and replace it with Saturn or something along those lines.

I'd let Corduba be, the Spainiards will finish it off eventually. Unless you plan to break your alliance with Spain, in which case I recommend taking it for yourself. Good luck.