I don't mind clamber, but I think you can do it too quickly. I want them to lengthen the time it takes to hoist yourself up. I know I'm a broken record around here, but I still think bad decisions are still too hard to punish with how easy it is too escape.
Also, since sprint is supposed to use your suit energy (you can't recharge when sprinting), I think a simple energy bar would be cool where you have to manage it properly. Say you are sprinting, but you are nearly out of energy so you can't go into a thrust. Or maybe you thrust and then can only sprint for a short distance. To go even further, maybe using up your energy then pulls from your shields so that you actually start to lose shields if you sprint or thrust too much.
Would be really cool to see how that meta would play out. Would require more thought and strategy into your Spartan Abilities. It would still allow for aggressive and fast play, but balance out the chaos.
Imagine if your shields go down and then you can't thrust away because you have no suit power.