You're right, being straightforward doesn't make anything outdated. In fact I don't even know why you bring that up, there's no correlation
Ripline is either single-target CC that roots you in place and has a long casting time, or a parkour ability that should've been removed along with Super Jump.
Paralysis is an ability that scales with shields on a warframe that has next to no shields.
Hysteria is mess of contradicting design decisions. It's a melee ability that punishes you for turning it off if there are enemies within melee range. It's an ability that heals you when you can't take damage, and damages you when you turn it off and become vulnerable again. Also the combos are awkward but that hopefully will be addressed with the melee rework.
Valkyr is a bunch of mechanics that were new and experimental at the time of her release and they never went back to polish them.
Neat, finishers can one-shot enemies. Just like with every other melee weapon.