Package for adding numbers to multi-cursor selections and incrementing those numbers
ctrl-alt-3 to set your cursor location to an incrementing number based on how many active cursors you currently have.
ctrl-alt-= to add 1 to every highlighted number you have selected.
ctrl-alt-- to subtract 1 from every highlighted number you have selected.
Good catch. Let us know what about this package looks wrong to you, and we'll investigate right away.