Hey! I am from Bulgaria, so here's some ships I think should be implemented in the game. Note: the ships might seem very underpowered for their role and the tier I'd be placing them at, but WG is known for buffing/nerfing things unhistorically anyway.
Drazki (in commission 1907-1950)
A Bulgarian navy torpedo boat, which almost sank the Ottoman cruiser Hamidiye during the Balkan War. The ship is now a museum in Varna, Bulgaria.
Tonnage: 97 tons
Length: 38 meters
Width: 4.4 meters
Draft: 2.6 meters
Propulsion: Steam turbine, about 1 900 shaft horsepower, two boilers
Top speed: 26 knots
Crew: 5 officers, 25 enlisted
Artillery: 3 x 47mm guns
Torpedoes: 3 x 450mm
As could be implemented in WoWs: Tier II premium destroyer
A big buff to its top speed, bringing it to about 29-30 knots.
To compensate for its TINY gun caliber (leaving about 450-500 alpha at most) it should be given high penetration numbers and different overmatch mechanics
Long gun range (11km at least) with about 20 shells per minute RoF.
A problem with the torpedoes, as visible on the blueprint of Drazki when she was commissioned. After WW2 the ship was re-modelled with Soviet triple torpedo tubes, which should be used instead of those.
About 9000 hitpoints
Rudder shift time of no more than 1.8 - 2 seconds.
A turning circle of about 350 meters, as this most likely would be the smallest and shortest ship in the entire game.
About 4.8-5km standard detection with 5.5km torpedoes (31 sec reload)
Nadezhda (in commission 1898-1930s)
Tonnage: 717 tons
Length: 67 meters
Width: 9.4 meters
Draft: 2.2 meters
Propulsion: 2 boilers with unknown power
Top speed: 17 knots
Crew: 10 officers, about 90 enlisted
Artillery: 2x 100mm, 2x 65mm, 2x 47mm
Torpedoes: 2x 380mm
As could be implemented in WoWs: Tier II premium cruiser
A buff to its top speed getting it up to at least 20 knots.
Both 100mm and 65mm mixed-caliber main battery. Would be fired with the same left mouse button (100mm would have 15 rpm, 65mm - 18 rounds per minute RoF)
It would be well-hidden due to its small size as seen in the Historic section.
21100 hit-points to compensate due to the fact the real ship had absolutely no armor and could potentially be penetrated by rifle-caliber weapons.
Torpedoes would have the same range as Drazki's torpedoes (5-5.5 km) but will be slower and weaker, though with a faster RoF (10-15 seconds reload)
Rudder shift time of 6.5 seconds
Turning circle radius of 385m.
Long gun range (13.8 km)