It's only better if it does a better job than the tools it replaces. I have working dhcp, cron and logging on all my systems (well, those that need dhcp anyway). I can replace them fairly independently. Why would I want to entangle them? And not only does the the tool need to do a better job at all these things, but it also needs to remain flexible, and easily tunable -- for it to be overall better.
I'm not saying that isn't possible -- ZFS is an example of a tool that gobbled up lots of others, and it's almost better -- for my use-cases not being able to grow a raid-array is a bit of a deal-breaker, as is the requirment of having roughly 4GBs of RAM available -- for many use-cases it isn't. But having disk management, filesystem management and managing disk encryption in one tool is great.
I'm not saying that isn't possible -- ZFS is an example of a tool that gobbled up lots of others, and it's almost better -- for my use-cases not being able to grow a raid-array is a bit of a deal-breaker, as is the requirment of having roughly 4GBs of RAM available -- for many use-cases it isn't. But having disk management, filesystem management and managing disk encryption in one tool is great.