hot take: a lot of things wrong with redemption can be explained with the knowledge that a lot of the team (esp writers) were coming off fresh from the librärians, which is an entirely different genre than leverage. suspension of disbelief is necessary for the librärians because its inherently fantasy that felt geared for a slightly younger audience than we are used to for leverage (which further made that same humor being used for innuendo just weird because some more than others, these characters are implied to have sex or be intimate with others so it's just... discordant).
characters can be goofier in an already over the top setting when you got literal shakespearean prospero coming to life as your big bad greenscreening campy-bad-so-its-good magic for a season. action can be goofier. hijinks happen and characters are Big and Loud and Quirky, and we accept them as much as magic gone wrong or weird or different in fun chekov's Mother Goose Treaty of 1918 ways because all of those things were part of the fundamental worldbuilding of the librärians from day one.
there were some crossovered vibes from leverage to the librärians that i appreciated! but that was okay because it was a new-to-tv property with a mostly new cast. i personally felt the characters were more shallow than leverage but that's because i can connect between with quieter, more serious(ly positioned in a world) characters than the librärians, as lovely as they were for their genre.
but you can't move from the librärians to leverage with the same slippage. or, you can because they did, but they shouldn'tve. because now we don't have, for example, cassandra's brain misfiring for handwave plot reasons for a reason for a character acting bizarrely. magic became coincidences or (worse) incompetence. that's how we get parker fUCKING bumping into a button she didn't notice(?) or dropping a fUCKING balloon because she wanted to gloat(?) or reacting in hyper ways when she... wasn't like that before. or (and this is what got me to start tinhatting the librärians' role in redemption) eliot manages to miss a projectile (because of course he can!) but that somehow hits exactly a rope of the boat hanging over eliot exactly and that then swings down at the perfect angle to smash his shoulder because eliot (who we have been shown to move at metahuman speeds, even twelve years working on the team) didn't have time to either step away or at least mitigate damage.
red haze was a potion. reasons for things going down was given to luck instead of hyper-competence because it couldn't be blamed on magic tomfoolery. a man fuCKING literally puts a team of hired security to sleep because he was so boring.
leverage was always supposed to be a heist show where the magic came, not from a curse or a never ending stash of Convenient Plot Devices, but from the love built around found family. and that got lost so that's how we ended up with *handwaves* That.