If you don't want to work in front of a computer with mouse/keyboard, this is what you need. Not everyone has a powerful / decent modern computer to use DAWs. This can serve as a decent standalone machine to replace a DAWs. And you can always export the project into Ableton live if you need more refinement.
The speakers sound great, you can take it to anywhere from bed/sofa or even outdoor. The update made it possible to use class compliant audio interface to expand the audio in and out, so you can take a portable audio interface with you on the go too. You could build a mobile studio with all these features and maybe go to your friend place etc etc.
The plugins are great starting point if you don't have a lot of hardware or you don't have them near you. And the fact that you can create sample packs with this and take the sound with you as you go is crazily convenient. So you can make a draft, return home and plug in the actual hardware and record again. And this is only one of the many features/ workflows you can use with this machine.
If you use it in studio with lots of midi devices, you can make it the brain for midi too, no need to buy stuff like Bome box or MRCC. ( of cuz they are great if you need one in your setup ).
Last but not least, the constant update from Akai makes buying into the system a good investment. You can see how many great and killer features they have added through post-launch updates ( more plugins / class compliant audio interface )...
It is like a jack of all trades, especially you are into a more mobile / constantly changing setup person.