I have always said that gearbox pooling is what should happen. 5 for the year, however when it comes to ratios, each gearbox can have a different ratio for each from a select of 50 that the team can run. However, when those ratios are in they are in, no change, apart from a single final drive joker on each gearbox. If there is internal damage, the team looses that gearbox, if the case is damaged, the team can change the casing? Would that be a good idea?
However, for a gearbox change, id also consider doing it at the first pit stop, screw grid penalties, how would a 5 second stop-go at the first pit stop?
Whilst I'm at it, id change the engine component penalties to a 2 place for each component with a 2 second stop-go at the first pit stop?
However, i have always said there should be extra components for teams who have not won a race in the past 5 years, so any team that won a race in 2013 would be limited to 5 components of each. Any team in the top 3 of the constructors last year would be limited to 4 components of each. Also, any engine supplier or team that is new to the sport in the past 5 years, meaning didn't compete in F1 from 2013 onwards, would get an extra 2 components without penalty. This would mean Haas would be able to run more aggressive engine modes and Honda, well thats Honda...
However, id also allow any new entry team or engine supplier to run a test car after 12 events (for 3 days) and any official F1 test for a year before they enter, their only limitation is that it would have to be done by a test driver and a young driver and the fact that they would be limited to running 100 sets of current Pirelli dry tyres and up to 50 sets of dry Pirelli Test Tyres with a Pirelli Test Driver on board for 6 days. They would be limited to 20,000km in total distance as well.
F1 needs to have a look at penalties across all mechanical components of the power unit and gearbox, pooling for all would be good. Also having a mechanism for teams who have not won in past 5 years would be great to have more allocation and allowing a proper test program to allow any new entries of engine suppliers and teams before they enter to make sure they are mechanically and technically sound to do so.