I can see why the ending to ME3 was so divisive/annoying/disappointing, even without knowing/remembering exactly what happened. Bioware did a decent job of building up tension over the 3 games (or up to what I've played in 3, so far).
For my renegade playthrough, I think I'll have to go with default Shep. For whatever reason, my customized paragon Shep ended up with Melania Trump shaped eyes pushed out level with her brow, and when she doesn't look like Melania, she looks like Russell Westbrook with bugged out eyes. My renegade Shep had sharper, more angular facial features in ME1 and 2, not sure I'd be able to keep a straight face having to look at that face the whole game.