With the recent removal of mastery level which was a replacement for the token system and now adding the new platina currency as a method of unlocking higher level cars significantly faster new changes should also be brought to the game on how to earn it. One of which IMO should be the core meltdown as part of its rewards, helicopter escape gives 100, boat escape 200. And of course have it rewarded for winning server announced races like 30 for 1st, 20 for 2nd and 10 for 3rd.
Additionally I think it should be rewarded in derby maybe 10 for when you get a badge in a match ie: least respawns, most parts. And for winning matches obviously. Be a good way to help with the grinds to get enough for some of the vehicles especially the new mega vehicles.