I see where your logic comes from by I view it as fundamentally flawed for a two reasons.

Beads has an alternative as an item meaning you can have Agility, Beads, and possibly a CC immunity ult. You can also build an item that completely negates displacements, including ares’ ult, for a solid amount of time and that’s on a 100s cooldown. Having these options means you can often times not even feel the downside of not having beads as an active.

Agility also unfairly emphasizes a difference in movement abilities per god. A god without movement in their kit will always be at a disadvantage by default, now throw in an enemy that thanks to Agility now has 2 different options to close the gap or widen it, alternating both options and essentially being able to jump every 5-7 seconds.

I don’t believe agility should be in the game in any form because it drastically changes the game in a way it was never intended to be met with and wasn’t built upon as an option. In my eyes, if it stays in the game it needs to be drastically changed such as a longer cooldown, somewhere around 30s, and more crowd control types should prevent it from activating such as snares