Thank you for the great work on the pulp fiction books, and for this non-fiction one. I'm piping up because Veblen is one of my favorite idea-men, and this plugs a hole in my ebook library.
You may be interested in another of my favorites: Vilfredo Pareto (1848–1923). Besides observing the 80-20 rule that bears his name, and the "Pareto optimality" criterion used in quite a few applications, he also tossed out interesting ideas in sociology and politics.
I recently came across this one:
https://en.wikipedia.org/wiki/Circulation_of_elite - "Changes of regime, revolutions, and so on occur not when rulers are overthrown from below, but when one elite replaces another." - which sent me chasing for more of his writings. There are some 1935 PDFs of his main work, and a selection of writings by S.E. Finer seems a good introduction (a 1966 printed book).