I didn't read everything (i stopped at the end of the abilities),
first of all i'll not judging stats ( that the Dev's job ) and i'll talk about only the stuff you'll probably need to change ( remember it's my opinion )
So where to begin... it is accurate ( maybe too much for me 👨🔬), PART I : It looks pretty nice !
The design fit perfectly with Warframe, but (yes there will be some but on the post) something that you have to keep in mind is : spider never really existed in Warframe univers...
So you'll need ( before launching this warframe) to wait for a new types of mobs ( or probably added with a quest which can also drop Arann... ) it seems not important like that, but DE will probably need to change the storyboard for that ( I might be totally wrong ! ). PART II : Abilities for most for them are pretty cool !
Abilities are walledly thought (for sure) they fit with the spider concept... The passive in my opinions Vital Force gauge isn't matching with the spider concept, (probably a vampyr one ? x) )
the invisibility too... probably changing it with a molt this one seems to fit better ?? First spell looks logic for the venom but instead of spitting his venom, jump to the target. 2nd spell even if i'm not a fan of switching mods it's pretty good ! 3rd spell pretty good but 4 web could be too strong ( think about : 4 arann using 4 web each... this can be OP xD ) 4th spell all good seems balanced and logic for me ! PART III : your frame doesn't have enough place for Augment
Like i said at the beginning there is too much details, let potential Augment mods add some mechanics ( you probably think about it and just post everything ).
I wrote too much i'll stop now, but the concept is pretty good ! Nice work Tenno !
[MR 27] Taktikalshot 😉