No, you're not. All good.
0) Getting micro iDSD Bl might be 'the thing' for you indeed. You just need to ask yourself what is the most important thing you're after and move accordingly. And if it turns out that you want to be flexible with your purchase above all else, by all means go for BL and enjoy.
1) It is indeed. Though it's not portable, it was designed to be sound quality oriented above all else. We simply could squeeze extra bit out of this product in this regard because it's mainly a DAC and not exceptionally universal, portable do-it-all (our BL products) kind of a device. And having said that, iDAC2 offers the best sound quality in our current lineup, but we tend to think that we did pretty good job with our BL range as well
2) For now it is indeed.
3) Yes.
If you really want MQA, the only viable and iFi related option for now is quite clear - nano iDSD BL.
You also can ask your local iFi representative/distributor to try our goods. Our return policy is generous.