There will be a lot of areas which can be exploited in the future to improve the engine power:
- variable turbine geometries
- CVT feed back of turbo compound power
- variable valves and possibly compression
- front MGUKs
- weight reduction
Those things will cost money which may not be available for the first shot, but they may be liberated step by step to provide more innovation in the future and further reduce fuel flow. In effect this is a lex Cosworth. The independent teams will profit by lower engine development cost.
The 100 kg/h fuel flow limit is exactly as reported by Scarbs in last December. That is obviously the single mandatory spec the FiA wasn't prepare to compromise on. The further reduction of the fuel flow below 10,500 rpm forces the designers to at least use 10,500 rpm instead of staying as low as 8,500 which could be more efficient and yield more power. I doubt that the rev band between 10,500 and 15,000 will see much use considering that there is no boost limit in the regs. For optimal power generation those revs need to be avoided. So the lifting of the red line to 15,000 is purely a paper based thing as initially expected.
If I have read it correctly the injection system will also be FiA specified. This is clearly aimed at preventing an injection system arms race.
As expected the engine/chassis interface is heavily specified in order to facilitate engine switches between teams.
Throttle and brake control will be full dual torque mode by a single pedal. KERS push to pass is a thing of the past. Consequently the 120 kW electric power will be available all the time on demand if the ERS is capable of collecting that much juice from the MGUK and MGUH.
Electric only in the pit lane and the use of the MGUK as an electric starter will be a nice benefit IMO.
Wheels will remain small, so 18" wheels will be further delayed until 2015 at least. The front wings will be smaller and the noses lower, which is good for safety reasons. A pity that they will not use the tunnel concept, but the leading teams apparently fear a shake up of the order.
Things are looking good for Red Bull to cement their grip at the top of the sport. I don't mind that one bit. Ferrari got their V6 but little else what they can use to outspend the other teams.