Quoting these parts
at roughly the 26 minute mark Adam confirms that the footage of giant arrows was months old, and confirms they have since tweaked the size to be smaller and fixed the arrows arc pathing.
New info on other campaigns and areas of the game that haven’t been shown in depth such as naval will be released over time towards launch.
Not thinking about any AoE on consoles.
Towards the end they mention they are still in the stage of polishing visuals and that this is the final stage. Adam foresee’s tweaking right up until launch and also after launch to polish and continue to improve, they mention that AoE 2 and 3 have over a decade of polish and so envision a similar situation where the IP is not abandoned after it launches. He wants AoE4 to be able to run on any PC from high spec’d to potato so I imagine we will see a very large degree of graphical range in terms of texture and model polycounts.
On the question of if they’re catering more to casual or pro players, Adam says they’ve split the unit balance into campaign and multiplayer versions, so units on singleplayer campaigns will have different balance and relationships agianst unit types compared to multiplayer.
And another guy
"The gameplay presentation was actually “months old”, we’re not making any concessions with our choices, graphics are the way they are due to “colorful, inviting world”, scaling is how it is because readability is paramount, but we’ve, on our own terms, changed the arrows even before showing this to you. Also, the conversation with the playerbase begins after lunch (which I interpret as he’s taking it upon himself if the game fails due to community concerns that aren’t able to be addressed after launch).
Lots of corporate PR and upbeat feelings. Nothing about the lacklustre animations. He knows about Age of Mythology. Relic are great and they like to tie their shoelaces (apparently meaning they always like to do extensive documenting when making games) and they love and respect the franchise and what makes it tick. Campaign and multiplayer/skirmish have different balance teams. The game is very readable for Adam Isgreen when spectating pros, both for builds and micro. In short, they take full responsibility for any concessions they’ve made with the graphics and unit scaling. People can use mods if they want to change the scaling, but he doesn’t want to turn it into a “game for ants”. Game might not have workshop support, but mod tools will be released for sure after launch. Also the game is intended to work on most computers with the right settings.
AoE2DE is getting additional civs with the next expansion, as well as campaigns, and these will continue as long as people “play” (buy?) the game, and will not stop after 4 is out. Americans are amazing in AoE3DE and they managed to bring the original voice actor from AoE3.".
So, Building sizes Will not change?