She has a lot of story coming up, both on The Hilltop and off, that would have been robbed from actress Lauren Cohan if Steven Yeun was still around as her faux hubby.
The biggest departure would have involved Maggie, whose post-Glenn life easily eclipses the time when they were together, as far as her strength and abilities are concerned.
Viewers who aren’t familiar with the comics can’t possibly grasp the entirety of what’s to come in The Walking Dead’s future, and how drastically different Glenn’s survival would have made it all.
Sure, a possible complementary angle could have been worked out if Maggie had died instead – and Cohan’s stomach-churning death scene was both filmed and leaked – but that would have still meant massive restructuring.