Much like the REST Client extension allows you to add delimiters (in their case three or more #) between requests, it would be good if this extension offered something similar so that you can easily run individual queries or sets of queries in files containing multiple. So my playground looked something like below, clicking the play button when the mouse cursor is above the delimiter executes the first statement and when below the second.

use('db1')
db.collection1.find({})

//////

use('db2')
db.collection2.find({})