In the case of Lauren? Depends.
By far he'd only have use for the male only maps supposing you don't have Stray, whom does have a higher attack power than Lauren at the cost of well...cost. Slightly higher but it can still make or break a situation.
In comparison to his fellow silver archers? Spica fodder. Otherwise its just for the sake of completion.
Reason being is that unlike other silver archers his bonus is to HP instead of attack, which would be nice if said archers (Daniela and Soma) didn't already have base HPs higher than his without the stat bonus.
My reasoning is this on why that may be.
If Lauren had the attack trust bonus he'd be VERY close to Daniela in attack power with her affection boost in tow, making him a silver version of Spica in a way. Overall he'd still be crappier then Spica since it takes his ability to come off its initial CD at the same rate it takes to reuse it, but assuming you don't have any higher rarity archers he'd make a good unit to use alongside Daniela and Soma being a middle road choice with his skill.
Why isn't this so? Because of the Elven unit's stat spread. Since he's meant to have a higher attack power at the cost of lower HP base stat wise he's a good archer, but with Daniela and Soma having attack affection boosts they blow his higher base attack out of the water.
But then we have Spica (who is Lauren 2.0 with better affection boosts than him). Given Lauren's treatment, why isn't she given the same? Simple: Most male units are stepping stones for female units.
Most male units are pitifully weaker in some respects to their fellow female units, and are mostly just units you use until you have the female units that take the spot they occupied. It is rare to find a male unit in the higher rarities than gold, which are mostly occupied by the female units.
What to take from this? Use Lauren if you don't have anything better for male only maps, otherwise use those Bronze archers and let Spica feed on Lauren's flesh so she can lv up her own skill since its mostly wasted on Lauren.
Edited: Because in the throws of my argument I made a fatal error in word choice.





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