Honestly, out of the things i listed this is more of a "would be nice" type thing rather than "we need it" but at the same time being on the Dashwire is not much different than being on the floor or in the air, you could just play the animation without any change imo. What currently happens is you jump, use the ability and land back on the wire, if you can play the animation in the air i dont see why it couldn't just play on the wire.
If Ivara was released in the current day i honestly believe she would at the very least not lose energy for taking damage and maybe not spend more by moving, those things i believe are a product of old design, but also i don't think it really needs to be changed. As for no Spint of Bullet Jump, i kinda agree with those, given the nature of inifnite invisibility it needs at least some restriction.
Though i do miss the days when you could bullet jump while prowling by leap frogging, it was so on theme.