I'll also share my opinion on this debate. Part 5 is not a failure. It's a very good commercial project.
In 10 years, Heroes 6-7-8 will appear ;) A new, young generation will love parts 6-7-8, and the current fans of part 5 will say, "Well, it's okay, but nothing is better than part 5 yet." :)
For me, the best are parts 2 and 3. I don't need that wheel and major graphics :D