MP&D

I ran into a problem where the Modifier Tools extension wasn't working properly—more specifically, it couldn't properly transfer the entire modifier chain from the preset.

Using the correct settings, I created my own version that does this, including "Smooth by angle." The add-on can also either completely replace the entire modifier stack or 

add a stack from a new preset to the existing one without breaking the current one. There is also a button that works as follows: it finds and highlights dependencies on a modifier. For example, I created a mirror from an unnamed placeholder, then I wanted to change the mirror point to a different one but couldn’t remember all the objects dependent on that placeholder. All I need to do is select the placeholder and click the button, then select and isolate all dependent objects and change mirror point. It also works with Shrink Wrap and other similar modifiers. 

Link to google drive: https://drive.google.com/drive/folders/1TDHi5dlwe7nOA3Z4RX0xItW43bA-xK8J?usp=sharing