It comes down to personal preference and your own expectations on what ancient warfare should be like. Medieval II: Total War: MODs Broken Crescent 1.05 Broken Crescent 2.02 Stainless Steel 5.1b Stainless Steel 6.1 Deus Lo Vult 5.7 Deus Lo Vult 6.0 HTF: Eagle of the Elbe 05 The Long Road 2.0 Lands to Conquer Gold DarthMod 1.4D: The Last Episode Das Heilige Romische Reich 06 Third Age 1.3 Third Age 1.4 Third Age 2.1 Third Age 3. Combat takes somewhat longer than in vanilla, but not as long as in Silven's mod I think it's a good balance. He may have overdone that a bit since very freqently troops will fight almost to the last man, but overall I think Radious's battle changes are a big improvement.

One of the most noticeable changes is that units have better morale and take much longer to rout. Radious has also extensively tweaked battles. Some people complain that it's annoying to have to deal with so many armies, so I guess it's personal preference, but I hate having an empty campaign map like you often see in vanilla. So, in Radious you very frequently have large battles with 3+ stacks on each side, which I really like. Even small factions will have several full stacks guarding their province. The objective of Radious Total War is to improve the Rome II gameplay experience in a variety of areas, similar to the Shogun II mod of the same name. Radious has increased the army cap and decreased unit upkeep, so everyone can afford several full stacks. Radious Total War is a number of smaller mods that total to a large overhaul mod for Rome II: Total War.

The biggest change in the campaign is that each faction fields more armies.

Rome 2 radious mod