Soldato
The restrictions on the engine designs are the same as before, they are getting tighter and tighter each year towards a 2020 freeze.
They are dropping the token system, so rather than having to chose which parts you are going to develop you can develop evey bit your allowed to develop, but what you are allowed to develop is still restricted.
that's what i am talking about - they still have the capacity to radically change the engine layout etc. when the tokens are dropped which can place a huge change on performance, where the turbos located, size of the compressor etc. basically all the teams know already what's in the merc engine / pus and making it tick, but with this stupid token system they can't replicate it.