[Feature] Support for disguising a block/item's name/tooltip, without also cloaking its texture

[f-raZ0R]

Currently, cloaking a block as itself, um. Crashes the game 🙃
Having the ability to change a block's name, while still keeping what it looks like and what it drops while mined, would be incredibly useful.

Not sure whether this should be marked as a feature request or a bug, as this does... kinda crash the game right now when you try to do it, but also would be an entirely new "type" of cloak?