I'm of mixed feelings on the character. The reboot happened halfway through my childhood so I grew up with mixed versions of both pre-and post-Crisis. The Donner movies defined the character for me growing up and most of the TV versions I knew were inspired by it. Things like the Superboy TV show and the Ruby Spears Superman did more to define the character for me than the comics did. So you have A super-boy but you don't have THE Superboy (keep in mind, in the TV show he was in college when he started his career). This is why I guess I liked the Smallville method of handling the character, it split the difference. Which is closer to what I grew up understanding the character as. In terms of the pre-Crisis version, I didn't discover it until my teens and all the stuff like Kandor and Krypto and the Fortress fascinated me. Now, as an adult, I'm able to look at it more critically than I did then.
I don't oppose the idea of Superboy but I do understand why it's important to have him debut as Superman. And I'm really not comfortable with dumping that kind of responsibility on a child. Remember, in the pre-Crisis universe he started his career at age 8. I have no real emotional attachment to the Legion so I could take or leave them. This is (one of many) reasons I also have an affinity for the Golden Age Superman. He grew up with powers but wasn't a Superboy in the official sense. That makes a lot of sense to me. Again, these are just my personal experiences and everyone is a product of what they grew up knowing. I can understand why someone who grew up with, say, the TAS not being comfortable with a costumed Superboy.