I was once tasked with upgrading a Drupal instance and while I surely don't have the experience you do I have opposing feelings about this. Some of Drupal's mor

I was once tasked with upgrading a Drupal instance and while I surely don't have the experience you do I have opposing feelings about this. Some of Drupal's more popular plugins are certainly well maintained, but for this case (and I imaging somewhat commonly in the industry) they used numerous obscure plugins, some of which were only in "beta" stage. In checking the repo logs of these plugins it seemed as though some hadn't been maintained for years. There is also no database restrictions placed on the plugins, so they could literally modify any database schema. Not only do plugin A and plugin B know about each other, they are required to know about each other to function correctly; and I see that as a problem. While it can be argued that this is part of what gives Drupal its power and flexibility, I see this power as a very dangerous thing in a community of its size. It almost requires developers to put out quality plugins which is often not the case (for Drupal as well as any other community driven software products).