I personally don't understand why it's so hard to understand for Riot. This game will always favor duelists with a get-out-of-jail-free card with mobility. First, it was Jett, then Chamber (he was a duelist in his prime), and now Raze.
Look at Iso, Reyna (kinda niche, she can get out free but her kit is selfish), Yoru, Neon or Phoenix. None of them have the freedom of the previously stated duelists. If you're going to fix every duelist, the only way is to make mobility their main role difference.
Initiators have flashes, controllers have smokes, sentinels have traps and mollies. Duelists should have mobility.
Heroes like Iso, Neon, Phoenix don't have bad kits, they're just missing mobility.
For example:
Iso can enter his pocket dimension for a short time and get out.
Phoenix can erupt into flames and be invulnerable for a few seconds (cant shoot back)
Yoru has no timer on TP
Idk just my 2 cents, lmk what you think if you read allat