My take on multiple servers and why I think it is a grave mistake as opposed to one huge server.

So you just don't care about the myriad of issues that come with having a megaserver (though you completely forgot to mention the gameplay itself). Good for you.

Here's my reasons for disliking megaservers:
I don't want to play a laggy game.

EVE has to literally slow down time to support its fights and even then it's laggy as fuck afaik. Albion is an isometric game with simplistic graphics and also has no body collision. And even then, from a quick search of mass pvp, it doesn't seem that there's been some "thousands vs thousands" battles there.

Ashes will have body collision, it will have more effects on the screen and it has a limited world size that is not designed to house millions of people. The game doesn't work with megaservers.

Again, it's not even about tech at this point. The game is not designed to house millions of people. They had to increase the world by 50% just to house the supposed 10k concurrents. In order to house over a million they'd have to increase the game world by god knows how much. Otherwise it's just gonna be a barren world with nothing to do because there's a 100 players per each gatherable and a thousand for each mob.

We have not received permission from SirArrr to share the quoted post.

I mean, you can jump between servers. In the region of your sub. And with fresh characters instead of the same one.

The whole game's design is built around every server being unique and your reputation on that server being important (as Noaani pointed out). If Intrepid decide to change their design direction so drastically that the game fits a megaserver population - they'll have more problems than NW did. Alpha stage or not, the game has been in development for ~5 years. Changing it that much would take another 5 years and would also lose them most of their current followers, who chose to follow exactly because of its design.

We have not received permission from SirArrr to share the quoted post.

Then the classic phrase applies. This game is not for you. The design of the game is not meant to support this kind of actions.