I don't think you need every possible addon on your site. I even removed 4 from the available ones at my site. It's more improtant to get few addons active and then introduce more as your site grows. Why have 10 addons on your site that are inactive instead of 4 very active?
On the other site, it would be nice to have more so you can choose which one to use on your site.
On the other site, it would be nice to have more so you can choose which one to use on your site.