I've been going over this issue in my head for months when it comes to adding lots lines to photos. I like working with my current photo editor team, but they don't offer lot lines. It looks like the lot lines feature in Effects might be able to solve that! There are a few small workflow things that would make this a no-brainer: I need to be able to save the photo directly to my edited photos dropbox folder. If I'm having to download it to my computer and then reupload it, it makes it hard to automate inside my team.
Second, pricing can't be $4.00 a photo. I can see maybe $1.00 per photo, but at $4.00 a photo I'll just stick to adding lot lines in myself.