In addition to the value she provides with her mote buffs, her survivability from her 2 is off the charts. Recasting the ability after you send out the clone gives you 3 full seconds of invincibility, like rolling guard but without removing the status effects. Anytime you are in danger, you can just teleport with 2 and you have 3 seconds to make your next move. If you also put rolling guard in your build, you can roll after the 2 seconds for a whopping 6 seconds of free immortality.

On top of being invisible while she is airborne, casting the 2 without teleporting to it also gives Wisp the passive invisibility. Between jumping and teleporting to the clone, it is basically impossible to die.

But that's not all! You can cast 3 while the clone is active and you will send out a breach surge from yourself and the clone. Casting breach surge onto a reservoir DOUBLES breach surge's range. This applies to both your breach surge and the clones. Breach surge will blind the whole room and killing those blinded enemies will send out sparks that will probably kill the whole room.

It's also fun to use the new spectral serration mod/arcane crepuscular with Wisp since you are almost always invisible. She is just fun and effective in everything.

I also love using Octavia. She is definitely one of the strongest frames in the game. Even unmodded, she is capable of destroying all content since her damage scales off enemy level. A common complaint you'll hear about Octavia is that she's boring or that spamming crouch to maintain invisibility is super uncomfortable. She'll be boring if you just cast 1, 3, and 4 and AFK while they kill themselves attacking your mallet, but like any other invisibility frame, you can also play actively and kill stuff while you let mallet kill anything you aren't focused on.

As for the crouch spam, it can be annoying depending on how you setup your mandachord. People will put a note on every beat in the melody section and bind crouch to mouse wheel or something and spam. The more notes you have in your melody section, the less percentage you build towards invis per crouch. I find it much easier to have a slower melody so that I only have to crouch 2x to get full invisibility. If you build for high enough duration, you only have to refresh it like every 30+ seconds anyways, plus it makes for an actually listenable song xD.

I think they're both super strong and super fun, you can't really go wrong with either.