why remove great features?

[JagiChan]

With every new iteration of phone Samsung devs remove some good and useful features. For example they removed 

(1) the call blocking with criteria selection as available in S4. Now I have to install a 3rd party app.

(2) super slow motion in s9/s9+ had multiple take. This has been eliminated in s10/s10+.

Why? I do not understand why great features like the one's listed above have been removed.

Can the devs at samsung please look into getting them back in the next update of one ui 2. Thanks.

[rajutomar]

live message feature in S10 is not available after updating in one UI 2.0

[JagiChan]

yeah, I see it now...