Sorry in advance if this topic has already been addressed.
I have never used a 
fuel-powered jetpack and I don't intend to. Therefore this request is solely for the 
Electric jetpack.
I find the hover-mode's tediously slow ascension to be pointless. However, I truly enjoy the slower descent function of it because it's stressful worrying about fall damage. So I figured: why not just alter the hover-mode ascension to be fast , like the default mode and leave the descend mode slow as it is?
Or if you prefer it, just add a new mode with the properties I before suggested.
Thanks.