I hope this will be like EVE Online but actually fun. When I played EVE, I always thought that a programmable ship would be fun. Although there is a risk that programmers will get an unfair advantage. On the other hand it may get more people interested in programming. I wonder if this will ship with an interpreter/compiler for any language or whether you will have to write ASM? Surely won't be long before there is a…
Will players have to maintain multiple accounts just to remain competitive, as in EVE? Someone will have to make and sell a 16-bit "minesweeper" to play while mining. What will the first computer virus do? Will there be "actual" viruses? Can we convince Notch to let our characters get Space Flu?
It really depends on how the admins choose to handle this, whether spreading viruses is fair play or whether it will get your account banned.
I can imagine a newbie would find it highly annoying if 5 minutes into the game they end up with some Space Virus that causes their ship to spontaneously auto destruct all the time.
Regards mining: Generally this is the most boring part of any MMO, just mindlessly grinding resources. Hopefully the programming aspect will let you do this while you are offline and have some scripts to decide what to do when you are attacked etc.
The other problem with the programming aspect is this. I imagine Notch put it into the game thinking that it would be something fun for all players to mess about with. What could happen in reality is that a few of the better programmers release a bunch of scripts to do anything and these scripts become to best scripts out there.
In such a case anybody writing their own code would probably be at a disadvantage compared to the other 99% running UberScript v3 so you end up with all players running essentially the same software.
I hope that this game can be designed in a minecraft sort of way where it is not directly competitive and more can be gained by players working together rather than everyone out to "gank" each other. Although epic space battles are always fun.