It seems that, in your opinion, Heroes is played by children of kindergarten age, and that most players are of that age. I haven't noticed any simplifications in Heroes 5 compared to Heroes 3, only improvements. If you reason like that, then a car with power windows instead of a crank handle risks becoming a baby stroller in the future!
Okay, I'm going to play Heroes 1 and Heroes 2. Maybe I'll discover that spirit you're talking about.
Remember, if you dress in a 15th-century costume, you're unlikely to be able to feel the spirit of that time (just for reference).