I've probably played at least 1,000 hours of each (DotA, HoN, and LoL). Still working on my playtime for DotA 2.
Anyway, I just don't understand how you can think LoL is more like the original DotA. DotA 2 is literally DotA with better graphics and matchmaking. Almost everything else is exactly the same, to the point that they added input delay to make it more like the original map.
If DotA 2 doesn't feel like DotA to you, it's most likely that you haven't played DotA in a long time, as the map has undergone quite a few changes and improvements since it was first released (I've been playing it for 9 years). I'd imagine that if you haven't played it for 4-5 years, it may seem completely different to you.
Still, LoL just seems like watered down DotA, I don't ever remember it feeling like that. Though granted, it was a lot simpler before. They've definitely added a lot of complex mechanics since the beginning.