I think you misunderstand the flex role a bit . flex flexible means you can play what ' s needed . So when you have a tank , a ranged , a support , the flex will play the last role required . Need double tank ? Flex will play the second . Need tass as double ? flex . Some whacky comp with aba , tlv or heck even chogall ? flex will play . The first picks in a draft should generally be comfort picks , with slight tendancies towards your strategy . You tank and ranged and support players each have their prefered choices , so lock those in for them . You will need a strong core anyway , and it greatly helps to have comfort picks in your core . You then look at what the enemy has and your flex will either complete your strategy or counter the opponents . Another possibility is to pick strong map heroes early kerrigan on IS , xul on bhb , rexxar on brexit . . In this case , mostly your flex will pick that hero because your tank ranged and support will later pick those exact roles anyway , and again I ' m leaning towards comfort picks being probably the best .