Personally, I think that while having fewer things to install seems attractive, it really doesn’t get you that much benefit. Whether you have two plugins that do two things or one plugin that does both, it’s still about the same amount of code and a similar impact on site performance. Splitting features over multiple plugins does introduce some overhead, but it’s usually negligible.
Also, small plugins that only do one thing are far easier to support that massive all-in-one applications. On the other hand, from the user’s perspective it seems easier to trust one big, semi-reliable solution than a bunch of small ones.
