Being, as I am, a tool when it comes to how projectors are, these little toy mini projectors are stil a few years out it seems. But, this is starting to step into the realm of 'usable' toy instead of 'unusable' toy the way it was for the past few years.
If a unit were in house (if you need someone to test, let me know!) it would be interesting to see if the BenQ could hit the numbers because at 200 lumens it could realistically deliver a very acceptable 80" diagonal screen size in a dark room.
I think that focus issues have been brought up as well as image uniformity, but that seems to hit more with Pico projectors instead of the micro projectors like this BenQ.
The addition of the HDMI input is nice, but it almost would be nicer if it was a multi-use display port connection with both analog (composite through VGA) and digital in a single connection format. I suppose I don't own a laptop anymore that doesn't have a HDMI/DP connection on it, so it may not matter to me or many others if there is a VGA connector.
Brightness, fan noise, and speaker quality.
They are really taking on that first point this year, but we also have a couple of 300 lumen micro projectors out there which are worth note. The fan noise is as yet unknown, but I would bank on the speakers still being extremly low quality.
I would take a case just a bit larger to pack in a bit more oomph from the speakers, as well as a bit more muffler for the fans, or allow for larger, quieter fans.
I figure in 3-5 years we will really start to see LED projectors make inroads on the replacement of traditionally lamped projectors.
Still, this unit is best served as a travel projector for watching movies in the hotel, or having a fun 'game night' with the kids. It will leave customers extremely underwhelmed if you try to use it for PowerPoint in a normally lit boardroom, which will keep this model as a niche market product until it learns to excel for brightness.