The first year sled gremlins thing is blown WAY out of proportion. Yes there are some things that can be improved on. 1,200 miles on mine with one belt blown. Similar story with my other friends who own the G4.
I've seen the bulk head gremlins and talked to the owner of one. I think the belt issue is either you got a good one or you didn't. Just like the Poo Pro 800 motor in 11 and 12. The guys having issues, it sounds like, have tried everything. I don't think you can discount them.
Here is the way I see it and I have said this before on here..
If it is a serious problem Ski-doo will address it!
They know how many sleds they sold and how many belts they are selling and how many parts they are sending out for bulkheads. They know the ratio between sleds bought and sleds getting repaired.
Trust in their system, they aren't trying to rip off the consumer. If they were they wouldn't have the market share they do.