im a newbie too , purchased digital bundle last week and just started playing .

you can always switch the server for only digital version; otherwise purchase from only retail will bound account .

Naturally, because the Mothership is a hero unit with terribly strong abilities.

Its never a waste to get a game from Blizzard (Excepting D3 lol)

Unlike other games, Blizzard has a long lasting track record of game availability. Servers are practically never down even after the game is discontinued (Brood war Battlenet still alive yo). This is still after 15 years....yeah 15 years...

You are going to need it eventually for Legacy of the Void to finish off the campaign if you are a story fanatic like me xD.

I search through the internet, probably late 2014 to mid 2015.

Btw, will Hots price cheaper in mid valley? Which shop do u guys recommend?

WOL & HOTS on sale now at blizzard store at $19.99.
i miss out the MS store for HOTS which is at $9.99 hence bought it from Blizz instead.

Bought DELUXE Edition just to get Portraits. Rarely play.