I think I'll miss Serena too. I think she grew into my favourite supporting characters, as well as Clemont and Bonny. Hopefully the Sun and Moon arc will have great characters too.
And no worries; it's great getting to know you! Welcome to the forums, and it's a pleasure to meet you!
Perhaps you'll enjoy boards like the Pokemon Anime board, as well as the SM board, but I do recommend exploring to see what you like! Have a terrific stay, and I hope we can speak again! Feel free to contact me if you have any questions~