The concern I think is that the automatic loader requires the installation of a hydraulic system, plus sensors etc. The cost of the vehicle would be greatly increased and then the hydraulic system also means a certain fragility (a torn or pierced pipe for example...) and a more complex vehicle to produce (IT, chips etc).
In the current state of war, could Ukraine afford the mass production of this type of vehicle with a hydraulic system? I think in my humble opinion that it would not be reasonable and that the means are better deployed elsewhere. Knowing that a vehicle of this type already exists and is provided (although in small numbers). The proof, the production of the CAESAR is very slow...
Did you know what are the caracteristic of Mod '23 variant ? (an exit from prototype status?)