Collection of talented team players with leadership qualities = Successful Scrum Team
(Collection of Team Players) X (Talent) X (Leadership ) = Successful Scrum Team
a(Teamwork) X b(Talent) X c(Leadership) = Successful Scrum Team
where a,b,c are constants.
As simple it may seems, I feel little description of this formula is necessary. It's obvious that each factor Teamwork, Talent and Leadership holds equal importance i.e. 0 value of any of these factors means a failing scrum team.
This surfaces the complexities of putting together a scrum team as well, you need to have the right combination of people. Also, it's vital that each individual of the team has leadership skills apart from talent and teamwork abilities, I feel this is a unique characteristic of scrum process. Unlike other SDLC processes having highly talented individuals with 0 leadership skills will not add any value to the success of the team.
Another point is , giving an effort to improve any of these factors (i.e. TTL) by increasing the constants (a, b and c) will have a direct impact on the success of the scrum team. I feel scrum teams need to put effort on improving these factors and try to improve teamwork, talent and leadership skills within the team to ensure the success.