I like the concept, and the free content is very welcome. However it feels rough and needs improvements. Scrolling is the worst thing, compared to smoothness of Comixology. There is no smart panel to panel jump and page transitions are slow.
Lots of data is bad, like a 2005 comic listing year as 0002 on last info tab. There are no star ratings to tell you what people think overall of that issue. When finished with an issue, there is no smooth way to go to the next one. Etc.
Comixology, which hasnt had an update in a very long time, but is still the gold standard, sets the bar. Marvel, please meet it or at least integrate this pricing model with it.
UPDATE April 2016: Still poor. Doesnt support basic iOS gestures like swipe from left to go back when looking at search results. Creator names arent clickable in tab to see more of their work. No iPad Pro support. Filter is almost unusable with a 3rd party keyboard, jumping unexpectedly. Cant click cover to see larger version in item view. Do I need to go on?
SilverSideDown about Marvel Unlimited