I started a Julii campaign on med/med and found it better. The AI is putting up a better fight - perhaps because it saves money not buying excess boats. Plus the Iberian infantry seemed a better match for hastati - presumably, as due to getting rid of the missile attack in close combat bug. [Confession time: the Spanish intervened to aid the Gauls and wiped out my second army. Never had my butt kicked pre-patch.] AI diplomacy was more active too. I really appreciated the check box to control your own reinforcements.

On the minus side, all my combat generals get cruelly scarred. Also extermination or enslavement may still be smart - an occupied Alesia was a bear to keep loyal, so I abandoed it to face the Spanish. (But then again, I suspect Caesar did enslave or even exterminate Alesia).

I'd given up on RTW as it lacked challenge, but with the patch, I'll give it another go.