I think the first space battle when leaving the Death Star is, dramatically, weak. There is a push for the character to escape and it seems that's the 'pay off' point.
When the TIE fighters come, the whole sequence feels to me like it was an afterthought. I'd prefer it if they'd just escaped or maybe escaped with the TIE fighters shooting at them.
It kinda doesn't make sense that the empire would only send about four fighters to chase them. They'd have thousands on the Death Star.
I think also the 'destroy the Death Star' thing is too much of an overreach. In hindsight, the destruction should have been left until the final episode - Jedi.
You've got this incredibly powerful weapon that gets destroyed by a couple of laser balls and the force.
It's a weak way to destroy the Most Powerful Weapon Ever Created™️
I think a better ending would have been for the Rebels to see off a single attack that didn't include destroying the Death Star. Or maybe accidentally (seemingly) destroying the Death Star.