Simply put what are some retcons you would implement had you control of the haloverse? 2. Human technological advances after the Human-Covenant war - Instead of jumping another technological tier just prior to the war ending major advances wouldn't be gained for at least 20 years with mass implementation another 20-30 years after. Creates a deadlier post-war era forcing humanity to rely on diplomacy and first strikes rather than Infinity and modern era ships however few. Conflicts with the Innies would probably still be on the rise in addition to "covenant" piracy creating a quasi wild west environment with the UNSC being severely depleted.
Yeah this one never made much sense to me. Humanity is esentially on crutches at the end of the war, but in a few short years creates the biggest ship it's ever had complete with Forunner tech. Outside forces like you mentioned as well as inner squabbles and politics seem like it'd slow things down a lot. Aside from ya know... entire worlds being lost and resources depleted
3. Forerunner alloys impervious to human Ballistics- Rather self explanatory yet one of my highest grips with the current era, there isn't any reason for Forerunner combat automatons being susceptible to the UNSC's weaponry bar lasers,rail, and gauss tech. Kills the immersion of beings able to create structures of adamantium (stated in Cryptum) which stay unscathed through time yet combat automatons easily destroyed by a tier 3/2 race.
Now that you mention it, yeah this is weird. I personally dont want Halo to become all laser-y and generic Sci-Fi, so I'll let it slide.
4. The Banished - While there isn't anything illogical or inherently
with The Banished i'd rather the Covenant be fearful of another faction beyond our reach and noticed than a rebel group. This would inherently be a post-war focus of the UNSC with them torn between letting Covenant remnants be exterminated or aid their disgruntled "allies" from extinction. Perhaps this threat could exist with the Banished taking a backseat.
I like the Banished and I think of them as another "Superpower" like the US/Russia/China. I'm thankful there's not yet another faction/species to keep track of. Humans, Covenant, Forunner, Flood, Precursor is kind of pushing it as it is, for me.