I think there's a good chance that HT upgrades that base to 100% plastic. Lately they've been reacting quite quickly (& uncharacteristically lol) to criticism (thank you, InArt), so this may be another instance where they realize they need to stop cutting corners and up their game.
Agreed, they should update the base. They can produce quality bases, but I can see why they would cut costs on some thing such as those. For instance, the base for the solo movie Black Panther (and VGM Spider-Man Mark IV) was underwhelming and under par.