There are many addons that only need to be enabled if they will be in constant use. If there are addons that you need only temporarily to do something, then don't keep them on. As a result I currently have 48 addons enabled. 13 which are disabled. So that's 61 total. Managed VPS with SSD 2G Ram, Apache with Nginx Reverse Proxy, only one domain/site on server.
At the moment 11 is installed, 3 is deactivated. 1.2 allowed me to uninstall 5 or 6 addons, either because they didn't work any more or because they were replaced. The 3 I have deactivated will most likely not be activated again, and at some point probably just uninstalled.