Everyone pretty much uses something different. It's usually a matter of personal preference or what works the best for a speciic set of hardware.
There is no 'standard bundle', really.
For example video codecs are of no use to me, because playing videos isn't an issue. To someone that wants to play video files, they're going to want a codec set.
Frontends are also a matter of personal preference. Most GPS nav software is commercial, so you couldn't legally include that.
Granted, having all the commonly used software codecs, enhancements, etc in one location would be awesome, but how big of a deal is that really? most of us know how to download stuff and have access to the 'net to do so....