To lower the costs and to mainly give them a platform that is more forgiving than high performance combat aircraft.Then why do fighter pilots train with light jets instead of real fighters in their squadrons?
I am sure next gen jet trainers will be stealth.
Hürjet and T-7 are next gen trainers. There's no realistic reason to make a trainer jet harder to control, which is what you will achieve with a stealthy body design.
Another thought. With the Hürjet becoming active and replacing the ancient T-38s, and with Hürjet being much closer in feel, performance and avionics to F-16 and Kaan, could we maybe cut the number of F-16Ds used for conversion training? And put them through a Sufa like mod package through Özgür-3 to make them deep strike and SEAD monsters? Just a nice thought...Because trainers are designed for that purpose, to train with. An F-16 isn't, nor is Kaan. Making a trainer stealthy is just a waste of resources.