*** Rename current Battlecruiser to Heavy cruiser add new capital class Battlecruiser.

Reason: In history, Battlecruiser was a variant of battleship so treated as a capital class (e.g. Washington Naval Treaty, many battlecruisers such as Lexington, Akagi converted to aircraft carrier due to the capital class limit). Heavy variant within the cruiser class (and so heaviest sub-capital) was Heavy cruiser. The name Battlecruiser itself was an abbreviation of 'Battleship-Cruiser'

Washington Naval Treaty - https://en.wikipedia.org/wiki/Washington_Naval_Treaty
Heavy cruiser - https://en.wikipedia.org/wiki/Heavy_cruiser

Akagi - https://en.wikipedia.org/wiki/Japanese_aircraft_carrier_Akagi
"Though she was laid down as an Amagi-class battlecruiser, Akagi was converted to an aircraft carrier while still under construction to comply with the terms of the Washington Naval Treaty."


(In history) Battlecruiser was early era attempt to make faster capital class, often resulted by bigger, much heavier, expensive than battleship with almost equivalent firepower (e.g. HMS Hood). Only faster speed and relatively weak armor make it distinguished from battleship.

Bring this balance into the game could make things more interesting, or at least I think so :)

So,
** (New) Battlecruiser
- Requires battleship tech to build.
- Design and firepower almost equivalent to battleship
- Slightly bigger and expensive than battleship, with relatively weak HP and armor.
- Wide variants to choose combat computer, from swarm* to artillery.

*Battlecruiser often take fast scouting and vanguard role as the fastest capital class (e.g. Battle of Jutland )


*** Make dreadnoughts and heavy dreadnoughts requires higher tech than battleship.

Reason: I think being able to build ships better than battleship, just right after battleship tech could compromise the usefulness of battleship. Requires a little further tech advancement can make things more realistic and balanced.

Candidate list: Improved Battleship Hulls, Advanced Battleship Hulls, Standardized Battleship Patterns, Titans

https://turanar.github.io/stellaris-tech-tree/vanilla/

My thought: Improved Battleship Hulls for dreadnoughts, and Titans tech for heavy dreadnoughts would be an optimal choice (so treat heavy dreadnoughts as mass-producible, flexible version of Titans by sacrificing aura capability.)


*** Release the Titan Super Capital Class

Reason: I think many people still interesting in this super capital class if it made mass-producible, like heavy-titan class of ISBS ( https://steamcommunity.com/workshop/filedetails/?id=1667055737 )


So,
- Requires Juggernaut tech (or Juggernaut tech and Advanced Titan Hulls) to build.
- Mass-producible without limit, or it's own limit (just 1/200 naval cap without hard-cap)
- 2 titan aura or it's own version better than vanilla titan's
- Own-dedicated aura (like E-Attack and support cruiser). Maybe something similar to Titan Interdictor Module, but nerfed (balanced) version of it? https://steamcommunity.com/sharedfiles/filedetails/?id=1997761958