I don’t think the full details are set, but it is coming for sure in 2016. Maybe you should call Tom, as he said in the video he is always available to his customers :P
I’d guess the drivers who finish last will be given preference to claim an engine if they’d like and would have to pay what the cost of a new engine is plus $800 or $1000 dollars to make it happen.
there is obviously gong to be people in favor and against this, both will have valid points. It can be a pain in the ass, but it could level the paying field (or give you a a sense of it). If they feel the need for that it must be they have reasons to think someone is not playing by the rules or bending them.