What do you think 0 A.D. lacks?

[Emacz]

1 hour ago, Dakara said:

Call to Arms" button exist already ! 

Wait, call to arms button? I must be nub.

 

1 hour ago, Dakara said:

This seems to be a minor issue or rather, a case of player inattention; if a player decides to gather resources while under enemy fire, that’s not a problem (towers or archers deal low damage).

I agree do some degree. But I still think from a practicality/logical point of view; if you are out working the fields and you see an enemy raiding party, or more importantly one of your comrades is being attacked chances are you are going to take up arms and defend, or retreat

if your opponent is really good, and you are nub like myself and they are attacking from 2 or more areas, you might just be focusing on one and not realizing you are being attacked somewhere else. 

[Thalatta]

2 hours ago, Dakara said:

Call to Arms" button exist already ! 

Where? I see only six buttons: Self-Destruct, Abort, Attack, Garrison, Occupy Turret (which I don't know yet what it does) and Repair.

[Atrik]

12 minutes ago, Thalatta said:

Where? I see only six buttons: Self-Destruct, Abort, Attack, Garrison, Occupy Turret (which I don't know yet what it does) and Repair.

Vanilla UI doesn't have space to display all unit action button, so it doesn't show it. You can use the hotkey as an alternative.
I can also recommend using ModernGUI as others and myself contributed to fixing bugs and limitations of the game UI. There are at least 100+ bug fixs like this in the mod. You can also choose to wait a few decades  for them to be addressed in vanilla (no sarcasm, just a extrapolation of the time to get one item merged), staff and contributors do whatever they can to make it happen but the process is slow by nature.