I think everyone has a certain character they want released. Some people are just more vocal about them than other people. I mean for me this is my list of most wanted characters:
Honestly I will be happy that I get the first three on that list but I think in order for Spinwit to be released they'd have had to release a lot more characters from NA like Sagitar and some of the more popular NA characters. However I think once a fan's certain favorite is released they'll go and focus on another character they really like. What that character is I have no clue hopefully they will put some insight into this thread.