Shyvana DOES need utility/CC and HERE'S WHY
All Shyvana does in a game is Run around and hope that she can catch or catch up to an enemy hoping they will die by her E, W, Q.
Her E doesn't do nothing it just** marks the enemy to apply more damage** towards her basic attacks, Q and W. So if you miss your E you're not gonna do much damage.
You need the enemy to be within her W range but that will never be the case since people KNOW that they need to get away from you or all they need to do is slow you down and ignore you for the rest of the team fight since you will be in the back line trying to catch up back into the fight. By then your allies are dead.
She can never catch up to an enemy and here's why, lets use Orianna and Jinx for example.
Orianna's W slows you down HEAVILY so even if Shyvana had her W on, her movement speed will drop back down **to her base movement speed **or LOWER.
Jinx's W reduces Shyvana's movement speed by A LOT as well because jinx's E goes up to 70% movement reduction so Shyvana's movement speed is lowered back UNDER her base movement speed.
"Build BoTRK and Omens" Ok yes but why should Shyvana rely so much on items to create CC or get kills? it's basically saying she doesn't have a QWER set but a QWERTY set and that's flat out annoying especially since those items have a 60+ cool down, similar to an ult cool down.
People are scared or think that if Shyvana obtains a utility/ult her strength will be weaker or not become the best dualer in top lane anymore. Why do you care about that stuff so much? She will still be able to get kills and be helpful WITH the utility/CC why make her only a mobility machine?