The whole thing about a low level rough rider being better than a high level one for Sal/Maya has been long debunked anyway and ONLY holds true for raid fights - where of course you won’t spec into Healthy anyway. In mobbing, there are rarely any attacks that can healthgate you in a single hit - especially if you healthstack.
preparation and ready are both skills you never pass up, which means they’re outstanding. Neither skill has any downsides
Just my personal opinion, but just because a skill has no downsides doesn’t mean it is worth 5 stars. All Axton players would spec into Ready, Preparation, Impact and Sentry because they are highly accessible Tier 1 skills that give you important, but basic stats that your character can build from (reload speed, healing, passive damage, cooldown) but they certainly aren’t amazing gamechanging skills. They are very restrained in magnitude compared to other reload speed and health regeneration skills in the game. In fact. if I were to give a Tier 1 skill 5 stars, it would probably be Sentry as its equally important to Longbow to making the Turret a viable action skill.
Grit is fantastic that 20% at 5/5 happens a lot due to all the damage you take. Can save you from DoTs. Easily a 5 star
I’m pretty sure Grit only activates when the damage you take would force you into FFYL - which really shouldn’t happen too often. And unless there is something I am missing, it should perform as advertised and save you ONLY 20% of the time. Of course, its pretty cool when it chains - but the reason why Grit tends to occur in chains is because it works like inconceivable - so you can’t rely on it. It’s like relying on inconceivable to never consume ammo or always proc money shot chains - you just can’t. I had sooner rely on Quick Charge and a good shield, or even Healthy to fight dots (wear an Evolution and 10/5 Healthy and dots will almost never kill you).