So in the new time trial mode, the only item that drops is the nitro charge and as some of you may have noticed that using 2 at the same time doesn't give any additional benefit except for the impressive sound of the 2 sound effects at once. My suggestion is when you use 2 nitro charges at the same time you'll get a 2x as powerful boost so you can almost hit around 1000 km/h for a short duration. Not only that, but instead of a red flame your car will emit a huge blue flame with a longer trail like this:
It wouldn't be OP since you can barely control the car with 1 charge at 700 km/h, you'll use 2 charges that you could have used seperately with more control and it would be a rare scenario that anyone would get 2x nitro charges during a match.
But it would be hella cool
A scenario example: You're in second place, last lap and you're only 200 or 300 meters away from your opponent. 1 nitrocharge wouldn't be sufficient to get ahead but you could risk popping 2 nitros to swoosh past and get the first place. Wouldn't that be pretty sweet?
If the unreal engine can even handle such speeds, that is.
Edit: Damn this suggestion had already been posted a few hours ago. Oh well this thread is specifically about the boost and has detailed suggestions, remove if you wish, mods.
You're just a voice pal.