Building + New Unit suggestions

first time on forums, have a couple of suggestions regarding new features I'd like to see in Call of War

Radar

You should be able to choose certain provinces to build radar stations in. The radar view should be somewhat like that of regular units but of course bigger. Higher-level radar could increase the view range. Units highlighted by radar could have a blue outline or something to not confuse the players. Land units shouldn't be highlighted by radar as that seems a little unfair but Naval (not subs) & Air units should. There could also be a separate radar screen in the settings to let the player view all stations. Ps; for realism & balance, radars can be expensive in terms of rare material. Another important feature that would be nice is if the player received notifications when his or her radar picked up any contacts. (inspiration- HOI4)

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Coastal Batteries

Somewhat like what the UK had on her southern coast & Norway had at the entrance to Oslo harbour, coastal batteries could be a great addition to Call of War. Like forts, they should be quite expensive in regard to metal & can have damage output similar to cruisers but should be quite durable (HP should ofc increase with level). (inspiration- CoW subreddit)

pic.1- Lv.(1) CB

pic.2- Lv.(5?) CB

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Mines

Landmines maybe OP & quite a hassle to add but Seamines, I feel, might be easier & a more fun aspect (gameplay-wise). The biggest challenge with sea mines might be in regards to which units they damage i.e. will the players (who laid the mines) units strike said mines(?), what about his allies(?). Also, there could be a chance system when it comes to striking said mines where larger ships have a higher chance of setting them off. Players themselves could see where their own mines are (highlighted red perhaps) and any ships there (including his or hers) would have a chance of setting them off. Destroyers could lay the mines or specialized mine-laying ship units could be added. It is important that laying mines take time (at least 30 min) so that if say someone were to be chasing my destroyer(s) with a fleet of larger ships, I wouldn't be able to just drop a couple of mines & lay waste to their fleet. Mines could also be spotted (like regular enemy units) but only once they enter the inner view circle. Not sure whether they should be set off by submarines or not. Each individual mine should cost resources (not too much, but a bit) to prevent any smart alecs from mining entire seas. (inspiration- CoW subreddit)

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Despite not actually being mines, anti-tank barriers may be simpler to add than landmines. They could just slow down armoured units while leaving Infantry & maybe even Light Armour unaffected. Permanent AA settlements could be added as a feature too. (inspiration- 1940s German Atlantic Wall + Metropolis)

pic.3- AT barrier

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pic.4- Lv.(1?) AA

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pic.5- Lv.(5?) AA

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Tender Ships

The only real unit suggestion I have, tender ships could be an interesting addition as they could expedite the healing process of Naval units at sea. Something I would like to see added would be things the player can do to allow for their units (especially here, naval ones) to heal quicker. Firstly, bringing fleets/ships into port should help with this but also tender ships could be an interesting feature to have. They should, of course, be sitting ducks and slow down any fleet they may be a part of but should have decent HP.(inspiration- gameplay)

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For anyone who read this far into my suggestions, thank you for taking the time to hear out my suggestions to make Call of War even better. If you agree please upvote this to bring it to the devs attention & if you disagree/think I missed something please do tell me in the comments. Have a great day!