Hide the Plugins Screen From Site Admins
Removes the Plugins menu from subsite dashboards for everyone except super admins and blocks direct visits, even if "Enable administration menus" is on in Network Settings.
Snippet Library
Multisite snippets for WordPress
Snippets for WordPress Multisite networks: network-wide settings, new site defaults, super admin tools and cross-site tweaks. For network administrators who manage many sites from one install.
Let Site Admins Edit Their Own Site's Users
Allows site administrators to edit the profiles of users who belong to their site, which multisite normally reserves for super admins.
Lock the List of Super Admins
Blocks anyone from being granted super admin rights unless their username is on your approved list, protecting the network if a super admin account is compromised.
Stop Site Admins From Deleting Their Own Site
Removes Tools > Delete Site from subsite dashboards and blocks the screen, so only super admins can delete sites from Network Admin.