What are some of the pros and cons of enlarging the vertical lines between words in a logo like this? One I can think of, it makes the logo boundaries larger. Is it best to stick with vertical lines of the same thickness as the type or a different size?
The first one I would consider bad practice as it can be read as capital "i", which negatively impacts the readability.
Second one isn't good either, the divider is bolder than the word indicating it is the more important element.
Third one is ok(-ish)
Better options could include a lighter weight, grey colour, with whitespace or written as list. – Which of those is best is subjective and depends on context of the branding.