Maybe it was originally conceived as a mini-series, but launched as a series. Marvel is no friendly to promote not-interconnected miniseries and lately Lemire has worked in several ones (Black Hammer universe mostly). So maybe the plan always was an ongoing destined to be "cancelled" in issue 5, leaving readers trying to understand what happened. Or not. Is just speculation. I mean, series (or "stealth mini-series"?) for Solo and Prowler were also launched in a
Indeed Drops. We lack the information enough to understand many of the directions where a company choose to go. Maybe is just the money or the need to keep an IP in active or corporative affairs or an editor whim. We only see the publications, the final product. Trying to understand the cancellation of certain titles is swim in murky waters.The thing is: we don't really know how all the books are doing in the bigger picture. Direct Market sales don't tell us the whole story and we don't have access to other numbers, so we're really clueless as to the reason Marvel is letting some books last longer than others. Ben Reilly: Scarlet Spider and Runaways have pretty bad sales in the DM, but have lasted more than people would expect, possibly because of outside numbers. While other books with similar sales got cancelled earlier on. And then we have the Scholastic titles like Ms. Marvel, The Unbeatable Squirrel Girl and Moon Girl And Devil Dinosaur, which have passed the 30-issue mark and don't seem to be getting cancelled anytime soon. It's hard to tell how it's gonna be because it's different for each book. It's possible Sentry was doing so bad that they felt they had to cancel it, but that doesn't mean the book couldn't have any potential going further. The Unstoppable Wasp was cancelled before it even reached double digits too, but the trade sales impressed Marvel enough to let the book come back for a mini (with the potential of becoming an ongoing). Long story short: the industry is complicated, but Marvel is not helping any book by cancelling it before they can even show if they have potential or not.
It would be that the solution? Take the Sentry away from the main universe and move him to an alternate earth? Honestly, I'm not the character n° one fan, but I like the story so far (better than I expected) but it works because is in the main Marvel universe. Maybe the solution would be move him from New York.
Already posted Cap.