just generally ignore every dawn brigade units except nolan, only if you're lucky, as he is very likely to get speed, strength screwed, and do so only if you find yourself need another semi-carry unit that don't die in 1 or 2 round like the rest of the trash brigades, and micaiah and sothe, not because they're good or anything but you're forced to take them in to the end game wasting valuable slots. as for dawn brigade chapters, just have some op units to carry through, Zihark for one, is great, and with decent growth, great base stat, and earth affinity should be able to carry most of the chapters along side sothe, tauraneo, volug and jill. tauraneo is great for where he is available until part 4. and remember, everyone of the dawn brigade units, excluding only Zihark cause Mia is kind of similar with him, are just completely, utterly out classed by every GM units which you will get later, and it's not even close. imagine compare meg with gatrie, and fiona with oscar, and aran with nephenee, leo with shinon and rolf. even nolan, which is their best units are only just as good as boyd if he is very lucky with his level ups. and let's not pretend like we're actually gonna take any DB units in to the end game unless we're trying some crazy challenge or something. so basically, don't invest much in to db units, the draco shield you get from the beginning go to nolan, as he is the only competent front line units and could really use some defence boost, energy drop you get early on should go to zihark, and every valuable skill, items, mainly gems, should let illyana take them and transfer them to GM, who really need gold, even BEXP should be only used if you can't beat the next chapter without some quick upgrades, since later on after groups merged together so did the BEXP. and you can use them on other more competent units than the DB members.