I've been farming focus, simaris standing and kuva weapons lately and dug into suggestions online to see if I could improve my efficiency. The meta seems to say Equinox is 'the best' frame for these farms at Adaro, Sedna. From what I can tell, its her ability to put enemies to sleep for stealth purposes along with good mobility while also being effective with 0 forma builds that puts her as 'best' in the meta.
Adaro is definitely an improvement over other nodes for balancing speed, difficulty and tedium based on my experiences but I'm definitely not fond of Equinox for these farms.
The trouble is I really dont like the amount of thinking (for me) involved with Equinox when it comes to farming. She's a great frame who I'll eventually setup for more general use but for farming, esp when on switch/mobile, she requires a lot more thinking and tactics than I'd prefer.
Equinox requires enough thinking (for me) that I started looking for other ideas. Particularly Ivara and Loki given they both are designed with stealth in mind and take a lot of the thinking out of anything stealth related.
Ivara is a pretty straight forward build but the prowl movement nerf is enough of an annoyance I'd recommend Loki unless you need ~~corrosive~~ toxin kuva weapons. If you are also farming ~~corrosive~~ toxin kuva weapons, Ivara is a great choice. Re-use any stealth build and the sleep arrow from Quiver and youre good to go. Maybe add a couple archon shards to improve her parkour speed and roll around for faster movement.
Loki, on the other hand, ends up being easier to build compared to Ivara (0 forma) and easier to use for farming (refresh invis when the timer run out, use lull as you go). Very straight forward to play. I've also been chasing radiation kuva weapons which is another reason for me to use Loki instead of Ivara.
My Loki farming build, linked below, has proven the easiest to use when farming on the couch (switch/steam link), outside enjoying the sun (mobile/steam link) or late at night before bed (any platform). Exactly what I wanted. Even if not 'meta', this build very much worth considering. The link has a full description and details on the build + loadout.
Personally, those 3 farms are better run separately.
Simaris standing I use Ivara on the Exterminate mission on the Kuva Fortress (Steel Path if you can). Just stealth through the level scanning enemies and sentry guns, not really killing enemies as you go. Exterminate missions have a mechanic where enemies will start pathing to the exit if you bypass too many of them, so just follow the crowds to the exit. Then just use a melee weapon to clean up the crowds at the exit after scanning them.
Focus farming, do Duviri Circuit (Steel Path if you can). The Thrax enemies that spawn constantly are worth boat loads of focus. You can also do Void Cascade, deep in the game, but it's much less accessible and harder, having full access to your armory might offset the downsides.
Kuva weapons, just do the capture mission on Saturn. Easy 2 min sprint. Also, Corrosive Kuva weapons? You can only get Radiation or Magnetic dual-element bonuses.
I meant toxin, not corrosive. I've edited the post to fix that.
I can run the farms you mention but they are a huge PITA when I'm not at my PC with the nice monitor and 4 paddle controller.
This is for farming for when I'm burning time, waiting, sitting on the couch or similar. Essentially when I'm mobile and dont have a 4 paddle controller handy and/or large enough screen to see WTF I'm doing reliably.
I'm optimizing for non-thoughtful farming that is reasonably efficient, not the most efficient overall.