The FIA proposals outlined to BBC Sport broadly match a set of ideas discussed and agreed at a meeting of the F1 teams' top technical people on Wednesday.
Governing body, the FIA, decreed that the design was legal - but an appeal is set for 14 April after Renault, Ferrari and Red Bull challenged the decision.
And with McLaren set to face the sport's governing body, the FIA, on 29 April to answer charges of breaching the International Sporting Code, Dennis admits his departure will be welcomed by two of F1's biggest names.