Well, 500kg(1100lbs) payload is very ambitious, the helicopter really has to grow and get much heavier if this payload range is targeted. Probably one of the most important requirements in naval rotary-wing drone will be flight endurance, keeping this payload in the air for a few hours, being able to prepare the system for flight in a very short time and and being small enough to fit in a vessel hangar is probably impossible with all electric engines. Open source specs for the Northop's MQ-8, which was tested on Bell-407 fuselage for a while, had 700lb payload cap and a maximum flight endurance of up to 12 hours. This was actually made possible by converting most of the helicopter cabin into a fuel tank.
It should also has a communication range 150-160 nautical miles, more likely SATCOM and TDL, advanced autopilot and redundant avionics, including the ability to autonomously return to the ship in the event of a connection failure. Some sort of lightweight radar, and kind of EO/IR system should also be in standard equipment. For the ASW mission, it will also require a dipping sonar breakout, as well as a sonobuoy pod, and integration of various launchers or hardpoint pylons for various weapon systems.
If what is mentioned as 500kg on Turdef news is the external payload capacity; I get the idea that TITRA's targeted unmanned helicopter could be almost the size of a T625, which makes me think that TITRA is considering utilizing the TS-1400 on the turboshaft side. It could be a pretty big and high-budget aviation program, we'll see. But if they can pull it off, they could export this system to a number of NATO navies. trivia: ORKUN-2053, which has maximum diving depth of around 350m, weighs around 270kg. And the estimated weight of the light torpedo ORKA will probably not be less than 230-240kg.
