I'm glad that Nintendo doesn't give up this series and I'm glad that this game is developed by Camelot. They're really good at making sport games (for example, Mario Sports Mix sucked, and it was developed by Square while the Mario Golf & Tennis series got high ratings).
But why no RPG mode? I very liked the GameBoy Advance titles of the series even though the main characters were not Nintendo characters. It is just amazing that you are able to level up your player (however, I would agree to you all that Mario characters are better main characters than these Camelot characters, but I find it very good that they at least integrated a great Single Player Mode). It is also great that you can transfer your players and golf clubs from Mario Golf: Advance Tour to Mario Golf: Toadstool Tour. I don't see why Camelot removed that feature on Mario Power Tennis for GBA & GC.
Anyway, I'm really happy about a new tennis game. I hope this won't be just a remake of Mario Power Tennis because it just looks like a remake.
I'm still waiting for a Mario Golf for 3DS and a Mario Golf & Tennis game for the Wii U to come!!