As someone who owns and likes his DL1608 let me say that this is an obvious and IMHO very successful attempt at stealing that market. You can't compare this to mixers that cost twice as much in order to bash it and be taken seriously. Not everyone can afford a $3000 ditgital mixer.
First, no need to set up a router, no need to buy an iPad, but i would any way. Extra line inputs means 16 channels are actually 16 channels. $1299 plus 1 iPad =more functionality than the 1608 plus2 ipads and still cheaper.
It appears to have scene recall. Still haven't read all the literature yet but if aux sends can be pre or post fade and outputs have delay I'm selling my 1608 and buying one of these. End of story.
*Maybe - I see the x18 has programmable pre-amps. Biggest issue I have with 1608 is having to walk back to mixer to adjust pre-amps. Touch mix has same drawback.