Breaking a netherite shulker box with a pickaxe takes noticeably longer than a regular shulker box. Is this an intentional game balance decision to reflect their increased durability? It does make them a bit annoying to use regularly, though their fireproof status is a huge positive.

I haven't done any MC mod development, but would adding .requiresTool() to the AbstractBlock parameters of NetheritePlusBlocks.java fix this?

Another related QoL issue, the full class name is so long, particularly for some colors e.g. netherite_plus:netherite_light_blue_shulker_box, it pushes the item name off of the screen when hovering over it with ShulkerBoxTooltip in some inventory slots. I'm not sure what the fix here would be though.

I think the higher mining time was to try and make them explosion-proof, which somehow never worked. For the name issue, there's not really a way for me to fix that, mostly because that follows the naming conventions, and should be fixed with shulker box tooltip.