How to made chariot riding generals more useful on siege?

[Titus Marcellus Scato]

I meant, how to tweak their stats so they could actually used in siege battle inside the settlement....

no, changing Casse bodyguards to infantry or cavalry one is not the answer I want to heard, I want to get some input on how made Chariot riding generals usable on siege, especially melee urban combat... I've tried raising damage and secondary armour, but they still die like flies...

Chariots should not be used to assault settlements. End of story. They should stay outside and rely on the rest of the army to do the job.

And if the rest of the army can't do the job without the general, then the rest of the army is too small. When assaulting an enemy settlement, you should have a numerical superiority over the enemy.

Alternatively, you can make the enemy sally out immediately by besieging the city with a smaller army than the garrison. The enemy will pour out of the main gate to attack you, allowing you to use your chariots against them.

With the Casse, I sometimes launch raids with my chariots against enemy towns. Just using chariots and missile troops, no heavy infantry, but with several FMs in the army. The enemy army sallies out to attack, and I use my chariots as skirmisher cavalry, just staying out of melee and throwing javelins. Chariots have almost unlimited ammo, which compensates for them not killing many people with each volley. If you have several FMs this tactic can be quite effective in whittling down the enemy army at little cost, especially with slingers or skirmishers in support. Since the chariots are FM bodyguards, providing the FM himself isn't killed, their bodyguards replenish any losses automatically over the next couple of turns.

It doesn't even matter if you can't get in the town gate, even if you retreat most of the enemy you've killed will stay dead. Then you can come back later with your heavy infantry and assault the town for keeps.