It makes you wonder how the film was going to start. I am not aware of the scripts at all so i have no idea what was revised but i could imagine star wars begining without the battle on the tantive and that being woven in a story that was centered around Luke from the get go which was more than likely an option with skyhopper / binocilars looking at the battle and biggs going off to join the rebellion.

I was actually really hoping they would have did this for rogue one to be honest so i think the opportunity to cross over is now gone but looking at rogue one i can see the timeline overlapping in this film with life on tattoine. The ending was reshot so the tantive scene would have been much more different in the original rogue one edit based on the virtual 3D experience game first look.