Increments for blitz events

A couple of people have asked me about adding increments to the blitz events (which are currently 5m games).

Are players in favour of this and if so, what format do you prefer?

• 3m+2s
• 5m+2s
• 4m+1s

or something else?

5+2 is my preference

3+2

3+2

3+2

3+2