You know, now you mention it, I thought about this and realized I mainly want items to START on the same column, after that I don't care; only exception is tables in markdown, but those are few and far between.
I might give these fonts a try, although I've been used to Menlo for a long time.
I wonder if it would be possible to create a font that is not monospaced for letters but it's monospaced for words, so if you have a word + white space the end of the white space is the same as it would be with a monospace font. Alternatively, one could write "alignment characters" like & if one wanted to align lines like in LaTeX formulas.
I might give these fonts a try, although I've been used to Menlo for a long time.