1) Ability to manually Name our ships and ability to have ability to write a multiple ie. .txt files with a list of names and then we could select said list to be used naming a group of ships. (ie anime.txt containing anime character names and I could build a Weaboo class CL and select anime.txt as a name list and all the boats get their names from that list.)
2) Ability to build ships from refits. I know that you can copy+paste refit design and then build new upgraded ships that way, but I find out that to be unnecessary step due the ship editor loading time.
3. Ability to create task forces that are easily selectable from harbors. (ie. I could create a taskforce consisting of 3 K9-class BB, 5 Bear-class CA, 5 Wolverine-class CL and I could click once to select all the ships types needed (3xK9, 5xBear, 5x Wolverine) to create this task force and then easily move them to do their thing. If there is not enough ships available, the game could inform me that ie. Only 3x Bear-class ships were added)
4.) Select home port where task force always returns for repairs and other things that don't happen within your turn.
It annoys me a lot when my 151 000 ton Tiny-Class BB with 40% hull integrity goes into a harbor with 5000t capacity for 30 months to repair. it could be back in action within 12-15 months including the travel times if it would go to home port for repairs.
5.) Ability to select repair thresholds and/or have a confirmation if I want to ships go into repairs. And select if they go to their home port or nearest friendly port.
Repair threshold could be like go to home port if hull integrity is less than: 90%/75%/50%/25%/10%
I find it slightly annoying when I play as a Germany in 1900 and go to war with japan and it takes like 6-10 turns to get my fleet in their home waters and after one battle, where my single BB takes a single 4" HE to the belt and gets damaged and then my whole task force teleports back to Wilhelmshaven.
6.) If parts 4-5 are too complicated to implement make the damaged ships actually move back to port for repairs, so I can select them and command them to stay put, or to go whatever port I want them to go.
7.) Ability to build ships to major nations. ie. I'm allied to a Italy and democratic France with 3x the GDP is holding them back with constant wars and they're lagging behind with tech, so I could build some modern ships to them so the can keep up with the rest of the world.
8.) Ability to capture ships. If enemy surrenders because heavy casualties and I win that battle, I should be able to capture said surrendered ships and use them and if my ships would surrender I could keep them if I win that battle.
9.) Ability to research techs from ships captured/got from war reparation. Not directly get the techs from it, but I could select foreign design to be analyzed for 3-6m and get a huge bonus to techs I haven't yet unlocked. (But what the ship was equipped with) This would give a Spain more fighting chance, because I've seen it only survive over 15y in campaign when it Allies with me and I use my fleet to protect it. Playing as Spain is a challenging because they don't have that much GDP to start with and they're not a democracy until later. And Spain gets bullied by everyone else.
10.) Fix all bugs before adding new content.
11.) Add great mod support to keep this game alive for the next 30 years.