Barry....I think you have allowed yourself to be a little blindsided by the A3000. Whyat you see as disadvantages other will undoubtedly see as pluses......
The fact is that A3000 is an interesting cost cutting an dprofitability excercise by Sony....if they can eliminate the mirror, both static and 'flipping' from their dslr's then they will have lowered production costs considerably.
Also, you have missed the big advantage for existing NEX users....the A3000 offers a '20mil sensor plus EVF' at a FRACTION of the price of either the existing NEX's with EVF, or, almost certainly, any new ones that will appear. For those with NEX's and any Sony 'E' mount lenses the A3000 is quite attractive as a second/extra body. Incidentally, the A3000(and indeed the NEX's) offers something very important over Sony dslr's namely it is NOT bound by 'A' lenses but can take pretty much ANY lenses via cheap adaptors available online.
I was looking at the A3000 in Londons Westfield shopping centre last weekend and it was selling briskly!...interestigly, Sony's nearest eqiv. camera, the NEX 7 was priced at well over TWICE the price despite being 'old hat' now and due for replacement.
I have a feeling that you are going to be wrong about Canon low end dslrs.....these are not popular with experienced photographers and novices find them heavy and complicated. A3000 is new and relatively simple with good basic spec and smaller 'kit' zoom which is an excellent performer for weight and price and already supplied with the NEX's
.........And personally, (although not in the market for A3000) I've been wating for a simple switch between screen and evf for quite a while.......