If DM was designed as the main game mode instead of RM... what would it look like?

I think at why DM is not popular as RM, and also what DM would look if it was designed as the main game mode instead of RM.

This post of my thoughts will analyze the villager build menu, and nothing else.

Exhibit A: https://imgur.com/rkJJus3

My thought: the design and presentation impacts new players most

The first buildings DM players need are almost all in the second tab, while initially useless economic buildings are in the first. In contrast, RM has been designed in the opposite manner, with only buildings that you need being available, all in the first available tab.

Exihibit B: https://imgur.com/WNZBLNC

A simple design change that arises from DM being treated this way : Barracks, Stables, Archery Ranges, and Castles would be moved to the main tab, while less useful buildings would be moved to the second tab. Blacksmith and university would be removed. To basically every established aoe2 player, this seems insane that such a small thing like this could be a problem, you are probably thinking it sounds dumb, but this is how you learned RM.

to go further, the 3 resource gathering drop-off sites could be condensed into one generic Gathering Camp. motives being that it is almost entirely RM based, and serve no purpose in DM

• we don't research anything in these buildings
• there's no benefit or cost or choice to making them in dm, 100 wood is a cost in RM but negligible in DM
• DM Buildings UI is crowded and overwhelming to new players, and reducing that crowding makes the game a little easier
• player attention to these buildings is very little in DM, so they have little to no immersive power
• there's no time for new players to learn what these buildings do: DM games are too fast paced

in summary

• Move Barracks, Archery Range, Stable, Siege Workshop and Castle to the main villager tab
• Delete Blacksmith, University
• Delete the Mill, Lumber Camp and Mining Camp, replacing with a more generic 'Gathering Camp'
• Move Farm, Market, Monastery and Wonder to the 'More Buildings' tab