just don't do the perpetual development model that minecraft has.
i don't see anything wrong with a game that is constantly being updated with new content.
payed alpha/beta is bad because the game never becomes a finished product with few bugs, good polish, an overall good feel
alright, so i shouldn't use the word "constantly" then.
if you're still giving a nudge at what's recently been happening with minecraft, i completely agree with what you've said. however, minecraft also made a promise to update every week, which i think was a terrible idea and causes a lot of those problems you mentioned.
with a game like this, i'm sure that once wollay releases it, everyone will have some good ideas for new content. i doubt wollay would be so cruel as to release the game and then give up on adding anything new to it, so i figure he would probably take a suggestion or two, test all the bugs out of it, and then add it to the official release whenever. even if that span of time is several months.