My experiences with casters and noncasters have shown that noncaster are a lot more efficent in combat, athletics, and stealth. Casters can outdo noncasters but it tends to be either build limited, very slot expensive, risky, temporary, or require near perfect set ups.
Our mage levitated the team archer over the owlbear and an giant bird stole him. And we couldn't chase it because we had no level 3 slots left. But that was DM shenanigans.
Overall in our short game, a caster's best AOE damage did just about the same or less than as a warrior's damage to each target and their best Single target did less with an effect or equal to a warriors good round if they roll well.
As for utility and trickery. Spell sots were too precious. If the noncaster could do it, we let them. There were no throwaway slots nor "in case of' scrolls/wands.
Our mage levitated the team archer over the owlbear and an giant bird stole him. And we couldn't chase it because we had no level 3 slots left. But that was DM shenanigans.
Overall in our short game, a caster's best AOE damage did just about the same or less than as a warrior's damage to each target and their best Single target did less with an effect or equal to a warriors good round if they roll well.
As for utility and trickery. Spell sots were too precious. If the noncaster could do it, we let them. There were no throwaway slots nor "in case of' scrolls/wands.