So? Tons of games show beheadings does that discount a cutscene if it shows that? The trenches of bodies were directly connected to the zone and the events that have happened recently... It was showing you quite a bit. You just wanted an hour long cutscene showing the battle and the survivors placing the bodies into the trenches. Again, you don't like the fact that the Inquisitor isn't present for these events, but that is not a reasonable expectation. The Inquisition is extremely reactionary. Much of what happens, happens away from the Inquisitor who has to deal with the aftermath.
Bioware clearly showed quite a bit. Hell, choosing between mage and templars means you will not be present for one of those stories. So we only see the effects of that choice through the subtle shifts in our Inquisituon and the enemy. You should not expect an overblown cutscene to blatantly spell it out for you. This is not about show v tell... You just wanted a different story.
Showing trenches of bodies does nothing. What bodies are they? Where the hell are you? What is the war about?
You don't get that unless you have literally one or two brief lines of dialogue with one static NPC at each trench area who doesn't even get a close up and as I said, numerous other visual and aural cues were missing.
Cut scenes are actually important. You discount cut scenes, but Skyrim used plenty of scripted scenes (not cut scenes but scripted moments) for the conflicts which mattered to you in the present storyline. For instance, any time anything regarding Stormcloaks VS. Imperials happened, it was through strong reiteration of party lines through all the side quests (dealing with the Battleborns, the Battleborn family would talk about their siding with the Stormcloaks). You saw them everywhere, with unique costumes. It was pervasive. NPCs talked about it. NPCs talked about it in the cart on the way to your execution in the prologue. NPCs talked about it in all the holds - and not as stiff repeaters of lines but each NPC could be interacted with to some extent and they moved around dynamically.
We have none of that for the mage VS. templar war. NPCs and towns are not brimming with political opinions. You find a few randomly wandering enemies to portray the mage vs. templar war spread throughout the countryside. There is no momentum. No pacing. No dramatic effect at all.
That you don't see how utterly weak and vapid Inquisition was - how disparate the elements of audio and animation and cut scenes were to emerge as a strong picture of what is going on in that world - is baffling.