I know it’s not really polite to suggest changes to any of the original movies 
but I always thought the battle of Yavin sould have been different. With the thousands of tie fighters the Death Star would have, there is no way a force of only 30 ships wou even get anywhere near it. It was mentioned earlier in the movie that ‘the rebel aliance is too well equiped’, so why are they only sending 30 ships??
I would have liked to see the rebels send out a few hundred fighters (at least) to engage the tie fighters. The “30” rebel ships could be a secondary force that flew around the back side of the Yavin gas giant and came at the DS from behind. then vader and his sidekicks could have been dispached to dake care of the “30”. Them you could have cut between the MASSIVE space battle and the stealth run on the DS.