Interesting! i like Ur idea of keeping dynamic control of your ‘dash’ while it’s active. I’m still not entirely understanding why ‘Get Current Acceleration’ instead of 'Get Velocity’ or ‘Get Forward Vector’ but perhaps U have something specific in mind. There are a bunch of ways U could approach this.
Here is a simple, but different, approach. On the Character component, with a Timeline or Timer, in whichever Movement Mode U are using, U could temporarily increase the top speed (and/or acceleration of your Character). Again, while the timeline is playing, U could even multiply the speed input (like maybe from the ‘W’ key or forward input) temporarily to 1. U could also put a dash ‘cancel’ in there if the player releases the forward control somewhere to add a little more tactical depth.
U can control the lateral grip on the ground and in the air to tweak the feel of Ur dash, by adjusting the skid/slip as the character turns.