The romanian army had nothing capable of defeating the modern soviet medium and heavy tanks and was not likely to get anything capable of doing so from nazi germany anytime soon. But the romanian army had a number of captured modern soviet tanks and field guns and they decided to convert them to tank destroyers on the model of the german Marder II. The T-60 light tank was chosen because romanian industry could maintain it. A captured Soviet 76.2-millimetre (3 in) M-1936 F-22 field gun was removed from its carriage and a new mount was fabricated to fit the gun to a turretless T-60.
TACAM T-60
designer was Leonida Nicholas Astrov
designed 1942—43
production was from 1943 with 31 tanks built
general
mass was 9 tonnes (8.9 long tons; 9.9 short tons)
length was 4.24 metres (13.9 ft)
width was 2.35 metres (7.7 ft)
height was 2.31 metres (7.6 ft)
uses a crew of 3 (commander, gunner, driver)
armour, armament and mobility
armour was 15–35 millimetres (0.59–1.38 in)
uses as main armament a 1 x 76.2 mm Soviet M-1936 F-22 field gun
secondary armament was 1 x 7.92 mm ZB-53 machine gun
uses a 6-cylinder, water-cooled GAZ 202 (80 HP / 60 kW9 and a torsion bar suspension
was capable of reaching a maximum speed 40 kilometres per hour (25 mph) on the road and 20 km/h offroad
I would say this would fit as a Romanian premium or event squad, but not as tech tree since the Marder is already sitting in the tech tree.
Besides there is really no point of adding it without Romanian soldiers in the game.
An option comparable to the BR2 Marder but with different stats, it would be good to vary the gameplay of the few tank destroyers we have in the game a bit.
Well the easiest Romanian vehicle can be just battle pass all they need is to give T-III that is premium USSR tank but replace its markings with Romanian: