Im not sure what you mean. Do you favour that the split in sportscar racing continues? Because this is essentially just the end of ACO's presence in the US, nothing really changes for the WEC or the Grand Am except a few adjustments to the schedule in 2014.
Well now hopefully the France boy, as much as I dislike him, will tell the ACO to go away until they quit thinking their shit does not stink and sets up less spec. rules that
And you can't diminish Lemans either, the race has too much prestige (same is true for Daytona). American car makers may turn their backs but american teams will continue to race in Lemans even if that means buying european or japanese cars. Sooner or later one american car maker will go «Well, we have this brand new Ferrari killer and we are bringing it to France so that you little europeans can see it murder your little cars. Then you can buy it next Monday».