Maybe for future projects rather than rift but, just a simple “x2” option in the curve edit window would be amazing! Got so used to it from another goto plugin I use, I couldn’t believe it wasn’t in rift… just saying. I should get used to the way of drawing in shapes but the relative timings become a little confusing for my pea brain… 
If theres a way to do that without having to use both curves (one at double the speed) then please let me know. I wish more devs made envelopes like you guys tho! So easy to get what you want from a shape. Doubling it to edit further tho would be amazing 
ps loving Reflect and Inertia! Exactly where my heads at , but what’s next?