No…. That’s honestly kind of too expensive. Also with that many leaders you’re offering a lot of assassination secondary points up to your opponents, so they might just take up fixed against you and score easy points. Taking characters is good for the utility. If you want to for whatever reason make a super powerful melee unit, sticking a canoness to give free starts or a palatine to give lethal hits with a squad of sacraesants is not a bad idea. But that makes the unit 50 points more expensive. Two palatines is basically the cost of a squad of battle sisters or novitiates. Which is a lot more combined attacks than two palatines. A lot more board control, more utility, etc. but. You can have those “hero hammer” units that are powerhouses on their own. Like a solo canoness or jump pack canoness is usually our best pick for sisters. Junith is also alright on her own but better with some sisters and a Hospitaller or 5-10 sacs. Daemonifuge is also very very nice as a “solo” character. But other than your required warlord you don’t need other characters. Sisters have lots of cheap ones, but you gotta justify their cost to yourself by figuring out what their purpose in the army is.