The points on the end of the action figure’s shield look like they will be more than stylistic too.
This is still speculation, of course, but I think that the Wakandan shield Cap gets will split into two halves, which attach to his forearms.
When Cap is fist fighting with Thanos’ Black Order, these shields will be piercing their alien hides.
Instead of ricocheting his shield off his enemies and surroundings, this new shield looks as though it will function, ironically, much like gauntlets, providing protection as well as an offensive application.