Introduction

Here is a compilation of heroes used in High & Pro-skill scene. Heroes are identified by their likelihood of being picked or banned, a brief description of his role on the team. This list is very European / North American based, but it still may apply to the Asian Scene.

Source of Information:

GosuGamers - Large Tournament matches and IDEC Inhouse matches
SGamer - Chinese website with a Hero Search Engine of Replays
Dota Replay Parser - Searching replays through known players and clans

Note:
1) This is list of competitive bans, if you want to justify something is plain wrong then please provide replays of at least a Mid-High skill replay.
2) Note that IDEC matches with mixed players are not as reliable as scrims and Tournaments.
3) Description of each hero is brief, if you want to learn more then click on the guide linked.
4) If you want your guide to be linked here, PM me. I will consult with a few members on PD whether your guide is competitive comprehensive.

Legend:
Hero = Hero
Role = Primary Role
Other Role = Secondary role(s) or Alternate role(s)
Banned = Likelihood of Banned
Picked = Likelihood of Picked
Pop := Popularity compared to 6.59d
+ = Greatly Increased
+ = Increased
. = No Change
- = Decreased
Guide = Someone's Guide if available

Hero	Role	Other Roles	Banned?	Picked?	Pop	Guide
	Initiate	Gank, AoE	Auto / Always	1st Picked	n/a
	Carry	Gank	Auto / Always	1st Picked	n/a
	Roam	Rune & Lane Control	Always	1st Picked	.
	Tank	Initiator, Anti-Push	Always	1st Picked	.
	Support	Initiate, Carry	Very Likely	1st Picked	.
	Carry	Push, Disable	Very Likely	1st Picked	.
	Roam	Disable, Heal, Ward	Very Likely	Verly Likely	.
	Roam	Rune & Map Control	Very Likely	Very Likely	+	Zan's
	Semi-Carry	Tank, Babysitter	Very Likely	Very Likely	+
	Carry	Roam, Anti-Chen, Tank	Very Likely	Very Likely	+	Bergson
	Debuff	Heal, Ward	Likely	Very Likely	+	Vindicate
	Roam	Gank, Anti Push	Likely	Likely	+
	Gank	AoE	Sometimes	Always	.	Merlini
	Roam	Initiate, Ward	Rarely	Always	.
	Semi-Carry	Roam, Initiate	Sometimes	Likely	.
	Carry	Gank	Sometimes	Likely	+
	Initiate	Gank	Rarely	Always	.
	Tank	Initiate	Sometimes	Sometimes	-
	Gank	Disable, Initiate	Sometimes	Likely	-	Noobish-Noob
	Babysitter	AoE, Anti-Death, Ward	Rarely	Sometimes	+
	Babysitter	Ward, Gank, Mana	Sometimes	Likely	-
	Carry	Gank	Rarely	Sometimes	-
	Carry	Initiate, Gank	Sometimes	Likely	-
	Carry	Support, Anti-Tank	Sometimes	Sometimes	-
	Carry	Gank, Anti-Blink	Rarely	Sometimes	-
	Carry	Tank, Anti-Combo	Rarely	Sometimes	+
	Carry	Gank, Anti Blink	Rarely	Sometimes	+
	Carry	Lane Control, Roam, Tank	Depends	Depends	.
	Roam	Disable, AoE	Sometimes	Sometimes	-
	Babysitter	Initiate, Semi-Carry	Never	Sometimes	.
	Semi-Carry	Gank, Map Control	Never	Sometimes	.
	Roam	AoE, Anti-Fog	Rarely	Situational	+
	Carry	Gank, Map Control	Sometimes	Situational	+
	Semi-Carry	Gank, AOE	Never	Situational	+
	Support	Disable, Ward	Sometimes	Sometimes	-	DarkMedina
	Semi-Carry	Anti Invis, Initiate	Never	Sometimes	+	EcceLex's
	Gank	Ward	Never	Situational	.
	Push	Carry	Rarely	Situational	-
	Carry	Push, Tank	Never	Situational	-
	Support	Push, Mana	Rarely	Situational	-
	Carry	Tank	Never	Experimental	+
	Carry	Push	Never	Experimental	+
	Support	AoE, Ward	Never	Situational	.
	Initiate	Tank, Disable	Never	Situational	.
	Initiate	Roam, Ward	Never	Sometimes	.
	Gank	Roam, AoE	Never	Rarely	.
	Roam	Carry	Never	Experimental	+
	Roam	Initiate, Ward	Never	Rarely	+
	Gank	Ward	Never	Situational	?
	Carry	AoE	Never	Rarely	.
	Carry	Gank	Never	Sometimes	.
	Carry	Pusher	Never	Situational	.
	Semi-Carry	Tank, Map Control	Rarely	Situational	.
	Carry	Gank	Rarely	Experimental	+
	Carry	Roam, Push	Rarely	Rarely	.
	Initiate		Never	Rarely	.
	Carry	Chaser	Never	Situational	.
	Carry	Tank, AoE	Never	Rarely	.
	Support	Debuff	Never	Situational	-

Last Word:
Metagame is always changing, feel free to comment and discuss. 6.59d was dominated by intel pushes and carries, with the changes in 6.60, many AGI carries are back in action.
Comments and suggestions are welcome, I need some suggestion on Format and Layout.