it feels like the first perks of agility and authority are meant to compliment each other. have a thrall keep the aggro, and you’re free to attack from behind.
deadshot, at the very least, reduces the travel time and projectile drop over the same distance. i don’t usually use archery because of having to charge my draws just to compensate for drop, but the improve ballistics certainly makes it easier.
precision strike feels like it’s meant to help axe users. again, with the first authority perk, you a free to hit from behind for that extra damage, now with more penetration if you aren’t carrying past yellow encumbrance. add to axe users being strength builds, and any proper axe combos being all heavy attacks (which plays directly into the heavy blows and combo master perks), it looks like a pretty potent pve build.
balancing strength and agility 50/50 allows either second skin + deadshot (less armor weight to carry more ammo and faster projectiles) or combo master + precision strike (welcomed by any melee build with otherwise poxy penetration, albeit with encumbrance considerations).
one could pair those perks differently, like second skin + precision strike, but that just loses the benefit of faster arrows if using bows. or combo master + deadshot, where bows don’t really have combo chains nor finishers. either might still work in a throwable melee setup however, as javelins and throwing axes/knives can also travel stupidly quick with deadshot, and is not as reliant on ranged performance.
(javelins combos are light attacks only, so no benefit from the first strength perk. axe + throwing axe has a special heavy combo, but i’m not sure if the final flurry of swings benefit from the combo master perk, or only the last hit)
TL;DR
If specialising fully into agility, you give up some of those universally hard hitting buffs in strength so you can do the fancy acrobatics with less stamina use.
spreading investment across strength and agility seems to increase the lateral capabilities of several strength and agility loadouts, plugging certain weak points while never truly reaching the heights of raw power.