First I should introduce myself because I am new, I am a Spanish guy, I'm a big fan of starcraft and when I heard about your project, I wanted to participate and help where i can.
I'm using the google translator because my English is very bad. Sorry for the inconvenience, I can understand written English well but I find it hard to create sentences and express T_T
In what I've seen, all skills are instant, none has a cast time, this would be very important for pvp, just as all the characters should have some kind of CC (stun, silence, etc ...) to avoid most powerful skills of adversaries.
Do not forget the "playability?" , this could be a mistake. Players are proud to have skill in games.
PD: A greeting, when i continue reading i continue to contribute more ideas.
PD2: google translator cant translate "jugabilidad" how i will, i dont know if playability is the rigth word sorry T_T