What are the dimensions of the Titans

In real units? We have no idea what any of the ship's dimensions are. Also it seems the planets and ships are not to scale, unless even the strikecraft are as big as today's aircraft carriers...

Or the planets just look small cause the ships are all the way in outer space

I disagree. You align a ship against a planet. You would see that he ships are much larger than they should be against a planet. Even against other ships, some ships are way bigger than the others. For example, the Kol against the Titans, I mean just looking at it, the Kol is roughly a quarter of the size of the titans. Even though it should dwarf it even more.

And given that the titan is pretty much nearing half the planet size, maybe a 1/3 of giant planets such as the gas giants, it is virtually impossible to build a ship that size. Even the death star isn't that big.

Actually no Sporemaster because it would be extremely inefficient to bombard a planet any further away than orbit. So they are nowhere near scale.

We do know some of the crew sizes on some of the ships.

The crew sizes for the titans will prolly be in the maneul as well.

I think they reduced the crew size down to a factor of 10 at a minimum. I mean crewing a capital ship using on 50 crew please.

The original Sins of a Solar Empire had the crews of each ship in the Manual (should be in your original SoaSE install directory). The Kol for example is given a crew of 2,500.

technically it uses only 50 supply. we have no idea the amount of supply to crew ratio. if the kol has 2500 crew then it would mean 1 supply is equal to 50 crew. I can tell you that a modern day navy battleship has a crew complement of nearly 3000. These ships are much larger, so a single supply might be equal to 500. I can tell you that it would be hard for a space age planet to support more than 16 capital ships if their crew each numbered in excess of 25,000.

I dont think the supply points are meant to represent just the crew members (or a multiple of them), but all of the resources needed to maintain a ship.  Not all capital ships have the same complement.  The Rapture, for example, has 4000 souls on board.  And while the cobalt uses 5 supply, it only has 150 people while the Disciple only has 75 (4 supply).

These ships are highly advanced and there is likely a great amount automation to keep them running.

However, I do hope that there is an updated manual with lore for the new ships.

Yea me too when i REALLY board i read the manual and its fun to learn all the stuff about the ships

Full sized aircraft carriers may have that much or even into the 5-6000 range, but most non carrier combat ships do not have crews larger than 500. The largest non-aircraft carrier/Amphibious assault ship I can find is the Soviet built Kirov class at 700 some crew members.

The Bismarck had 2,000 men, just as an example. It varies based on the tech of the era as much as anything.

If you want great manual reads, try Homeworld, Homeworld: Cataclysm, and Starsiege.

Indeed it does, WWII Battleships had 1200-2000 men easily. But I was talking about the modern navies, and alas there are no battleships left, though some consider the Kirov to be a missile Battlecruiser. Smaller ships plus automated antiaircraft weapons and other computerized systems really reduced amount of crew needed, and I'm sure that Sins is the same way on an even larger scale.

In the new intro movie, you see soldiers marching towards a landing TEC Protev colony ship. Perhaps if you're observant (or bored with testing the second Beta )  enough, you could gauge the size of an average human being against the Protev and then that against the other ships in the game.  I remember seeing that Protev in the new intro and thinking "Wow, that is a LOT smaller than I thought it would be" with those troops marching towards it.

Too be honest I think the Protev in the new intro really is too small. Looks more like an airplane scale than a frigate filled with supplies, troops, diplomats, etc etc needed to set up colonies.

We all know things are out of scale. Intro aside, the sizes of everything are way out of whack. You see a round fired from a Kol and it's the size of an Arcova and the flash of impact is much larger. Yet the Arcova survives. Not that it's the only issue. There are nebulae inside solar systems rather than vice versa. But I guess, like most games, the units are more symbolic than realistic.

And yes, automation (phalanx, for example) has had a severe impact on the crew count. But then it goes back to what's the scale of the ship compared to the quantity and quality of automation.