Should my wife and I buy the expansion?

[Musashidon]

Wait until you can play expansion content before buying any expansion.

well the lvl 50 quests give exp now, but if you don't buy the expansion the exp goes to waste (like for the people who already did all the quests) because you can't get exp at 50 without it.

the exp will help get you closer to 60 earlier.

i am also not saying you should buy it, just saying put this into consideration.