They should just change Talon's W
Out of all the boomerang skillshots it's probably the least satisfying one to use since the changes. Looking at all other boomerang skillshots Ekko Q, Gnar Q(no damage on way back), Sivir Q, Ahri Q, Draven R
Ekko and Gnar Q slow on contact and stop on champion hit, which could mean less AoE damage potential but helps guarantee you get damage off both ways. Talon W is very easy to dodge if you are mid-range of it, all you have to do is walk sideways and Talon has no slows in his kit to prevent you from dodging it. Draven R is similar but has better AoE and is global so not really comparable but still harder to dodge.
Sivir and Ahri Q have faster overall travel time and rewards you for hitting it at max range, because you will instantly get off both parts of the damage, Talon W acts in a similar way because of the change but often you can just walk back from it if he goes for max range W. Talon tries to get into melee range as well so him being at max W range is not optimal.
The slow is often not noticeable as you're forced to close with W on assassinations because staying in their longer means you die and it only lasts for 1 second which sucks pretty bad. It's mostly unnoticeable because it lasts for 1 second I never really liked Rake as an ability anyways because it feels like 1/8 of your ult, now it just sucks so baaaaaaad. imo