I don’t really consider Sprint, Slide, & Clamber to be “advanced movements”. To me, they’re just common sense evolutions of the mobility component in FPS titles, but I can also understand why some don’t agree that sprint, as implemented thus far, should gatekeep access to the max delta movement speed by way of “guns down” gameplay. Nevertheless, these have been things I’ve been advocating to be implemented into Halo dating back to the earlier titles of the franchise.
The Boost, Stabilize, Spartan Charge, and Ground Pound mechanics I can see fitting into that so-called “advanced” category, but I personally enjoyed their inclusion. I did however want to see some aspects of them curtailed or modified from what we got.
But, these are all just my own opinions. And I understand that people may prefer Halo without these abilities.