The pro scene has wayyy too many Duelists
Adequate amount of hard initiator players (Sova, fade, not including Kayo/breach)
Abundance of initiator flex players (Kayo/breach), probably because it's the easiest role for duelist mains to familiarize themselves with.
Not enough good IGLs.
Not enough independent smokes players. (IGLs usually fill this role if nobody else can).
The Chamber meta irreversibly created a shortage of Tier 1 Sentinel/viper/harbor players.