I've never seen high level plays with it, and I've barely if ever seen anyone use thruster in a gunfight as a "strafe skill" only as a way to get behind cover really fast or snipe then thrust to cover or to use the speed combo.
I feel opposite about slide and clamber, those felt more quality of life just like ads (most of the time), thrusters felt to game changing which made it have the use of a easy get out of jail free card or for faster movement with the sprint, slide, jump then thrust with the later being the cataclysm for the combo. I honestly don't think it should make a returnTheres no way you can think all thrusters are used for is a "get out of jail free card" and faster movement....I mean its a staple to your strafe skill man. That in and of itself already makes mastering the use of it that much more important to your skill. Not only is crouching fully functional on your strafe now, but on top of that so is thrusters. You've had to have seen some high level halo 5 played right? Because its definitely not this get out of jail free card you're painting it out to be.
Not to mention all of the skill jumps added to the game with it....the knee cap jump..etc...and now what? we're going to have a grapple shot? Wow...thats fun....
Thrust is an easy-to-learn but hard-to-master mechanic.
The way you're describing it in this thread is as a user who understands the very basics of the mechanic. You know it's useful for movement, and sometimes you can use it to save yourself in fight.
The way players in high competitive ranks and pros like Frosty use it is at a much higher level. It's used in conjunction with other movement and jump mechanics in the game to navigate the map at a high level. This allows another level of competition over map control and spawn control that most average players couldn't hope to replicate without months/years matchmaking in competitive playlists.
Go watch some breakdown videos by Shyway in YouTube and hopefully you'll get more appreciation for what thruster adds to the combat dance.