Locomotive's

I would love to transport ore's with cargo trains.

Trains literally make everything better.

The rails May be done likes a trasportation belt while construction.
The station will then creator wagons automatized trains will take them bertween them.
Rails piece: 2 steel Beam, 10 concrete, 10 gravel
Station: depends on type, fluid/solid/loose loader
For dev ideas, you may contact me on Discord directly.

Maybe narrow-gauge railway ? normal railway could be to big for such small islands, unless islands could be bigger :D

Only if they are Hover trains that don't need tracks. Land already too messy with all the pipes and conveyors.

The maps are way too small for trains. For what would it be useful gameplay wise. Nothing

While I understand the excitement in general around trains, I don't think it makes sense for the map scale in this game. For a game like Factorio with huge maps and super long distances and extreme scale, totally makes sense.
I think the game already provides enough options to transmit material in bulk and to scale it up as you progress to later game.

Not a fan of trains as they would be grid based as in anno (I assume), though I do enjoy them quiet a lot, even when the rails look cringe as.
If I had to choose transport I would go for cargo airships as they are exactly the same as trucks (saves programming) and can go over blocked paths like buildings, mountains and the likes.

I think they meant "Locomotives" with no apostrophe unless he is suggesting things that would belong to locomotives.

Trains are trains. In a game where you need to move loads from point A to point B, there just have to be trains. Not necessarily full-size and not necessarily very practical.
Although it would be good to replace a bunch of trucks with one train on permanent routes.

I like trains but the maps would need to be larger, really no need atm

I would like to have train too into the game and each vagon could carry fluid, solid or loose.

Narrow-gauge industrial railroads would be nice to have, the kind that serve real-life factories and mines. They could move a lot of material and can be small enough that they could run through a one-height gap, meaning you could run them under vehicle bridges and the tracks could be the same size as current transports.

I don't think Trains would be useful because of the distances and some people are saying make them like transports but the currents transports do a good job moving stuff already. Unless maps are being seriously considered to be sized up I don't think this would be helpful.

Minecarts could transport loose products
Maintenance free and constructing rail is cheaper than kilometers of belts

Instead of trains how about a system like FOUP. I.e. pods. There is a need to make some sort of shared transport that will not jam as a bus of belts become rather unmanageable quick, and as they are first in first out they jam with mixed goods unless managed very carefully. A pod network wit compact loading and unloading stations could serve as such a shared transport without looking either too big or out of place, and in the endgame we are essentially making an outdoor waferfab so why not a FOUP in time for that?

Trains are neat, but above comments describe, there is no practical use for trains in this game that i can see.

While I agree that the scale is not big enough for full-sized locomotives, smaller (narrow-gauge) rails have been used a LOT in manufacturing. The Empire State Building had one on EACH floor to move materials around faster. I could see a real place for this as a replacement for longer truck routes and long belts. I don't think that liquids and gasses should be an option though...just Loose materials and the stuff that goes on Flat Belts.
The lower tier would be coal/water while the higher one could be electric (cost more to build but less Maint. to operate maybe?).

I am actually not so much in favor of trains as this would fundamentally change the game. Everything can be done with trucks and bets currently. Trains would make it a different game and the maps are actually quite small for this. my 50 cents

Trains would be a great idea, because sometimes we have to take a lot of cargo to certain places, and certainly the trucks would be overloaded.
Because sometimes, a certain resource mine runs out, so we have to change the whole factory layout to fit that, and the new mineral deposits are relatively far away, so we could just load the train with the ores and deliver it to the factory that is already in operation, without having to take the entire smelting plant to the new location or make the trucks walk a lot to deliver the resource.