I have had a look at the Silverstone fastest lap data.
LMP1-H fastest laps per car were in the range 1:40.303 to 1:41.076. This is a spread of 0.77% (also a spread of 0.77sec since it's about a 100 second lap).
Fastest lap was 0.533sec quicker this year than last year.
Spreads from previous years:
2015: 1.75%
2014: 1.19%
2013: 0.95% (only Audi and Toyota competing)
So it's closer, but of course there has been lots of discussion about who was running how much downforce etc so it's early days.
LMP1-P fastest laps were in the range 1:46.235 to 1:47.057. This is also a spread of 0.77%, so ByKolles have made up a lot of ground. However, they are still miles off LMP1-P.
Fastest LMP2 lap was 1:48.909. This was a freakishly fast Pipo Derani lap. Next up was a 1:49.506 from G-Drive/Jota. But this is still uncomfortably close to LPM1-P.
Fastest LMP2 lap in 2015 was 1:50.045.
In GTE Pro, Ferrari was easily quickest, taking the top two times with 1:58.885 and 1:59.753. No other GTE broke the 2min barrier.
The Fords brought up the rear in GTE Pro.
As mentioned before, top speed for LMP1-P is not a problem. Getting there might take a bit too long, and cornering speeds are probably significantly down on LMP1-H.
THE SOLUTION IS THIS: massive power hike - ditch the little AER for Judd's AIM 5.5 litre V10, 650bhp; or Gibson's ZJ458, 700bhp.
No fuel flow limit.
This will allow them to run more downforce than they do now to increase cornering speeds while maintaining their high top speeds.
Easy.
Mods: please remove '2015' from the thread title.