If an existing WordPress block doesn’t fully meet your needs, it can be tempting to build a new one from scratch. Doing so gives you complete control over the block and what your users will see. 

While this approach is valid, it often leads to more work and ongoing maintenance, especially if you only need minor enhancements. You’ll not only have to replicate much of the existing block’s functionality, but you’ll also miss out on future updates and improvements made to the original block. This is particularly relevant for Core WordPress blocks, which are frequently updated with new features, improved user interfaces, and more.