Here is a stupid way they could have implemented the final fight against the reapers.

Imagine if you're watching Lord of The Rings (the whole trilogy), and Frodo and Sam finally make it into the Volcano. Only instead of getting the wonderful thrill of finally witnessing what you've been anticipating for the past 9 hours (or if you're reading books some days or weeks) you are instead rudely interrupted by a ghostly vision of Sauron who says everything is your fault, not his. He is cleansing you of your warring because humans and elves cannot co-exist together (despite the fact that Aragon is marrying one!). He says that you must REPENT! The cycle must end! You must jump into the boiling pit of lava where magic will fix all of our problems. No one gets to kill Sauron for all his crimes, everyone gets nuked as a result of Frodo jumping into the volcano, and you have a choice between red, green or blue lava! The red nukes all! But also nukes the orcs! The blue gives Frodo control over the orcs! Green merges man with elf with orc!

18:48 Star Wars wasn't about the Emperor.

This should almost be shown in script writing classes as a case study of what to do and what not to do. It was objective, thought provoking, and clear. It shows people how to logically follow through with a story, and how you can lose focus of the story. It just shows that the best works can be forever marred by a segment of poor decisions and poor writing. We love Bioware original work and what they did. But we hate Bioware for how they ended it. Frankly, the ending stuck with me for so long that I gave away my ME games and have not returned since. Mass Effect is a thing of the past. It almost was my modern day Star Wars. Now, it is just another game. 

"Not even if it's a Renegade FEM!Catalyst that romanced Garrus"

"Don't show us a slide show..."

The ending to Mass Effect 3 really shouldn't have been that hard, just do the suicide mission again, but on a bigger scale.