Here is a nice article why it will be difficult to overtake and why we will see some dull racing:
https://drivetribe.com/p/auZby7jDQhu...S1q_tlPfldCSgQ
IMO, going with higher downforce and higher cornering speed this is inevitable. In the WEC they always wan't to rob prototypes of cornering speed, because of GTE traffic, this IMO has made racing more interesting.