Necropolis – a triumph or a failure?

I've been playing Heroes of Might and Magic V for a long time, and I mainly play as Necromancers. And here's why: 1. The ability to restore any type of army during a battle (though we shouldn't consider this a major advantage); 2. The ability to restore troops after a battle (the type of troops depends on the hero's level and skills); 3. The ability to transform "enemy" troops into "your own." However, it's important to note that, compared to the powerful racial abilities of other races, the Necromancer abilities seem weak, which sometimes leads to defeat. Since I enjoy playing as Necromancers, I believe they are the best. But I would like to hear a well-considered opinion: are Necromancers a triumph of the game's creators, or are they a failure? (I apologize in advance for any grammatical errors.)