I thought this would be more fun than just listing the books I have hard copies of, so if anything strikes your curiosity, or you can't read the title, ask away. I have read all or big parts of around 2/3 of the stuff there, some I have more for just reference. I have way more stuff on pdf but this is more fun to share. Also yes in advance, I do give too much money to Verso.
Ernest Mandel is definitely in the upper echeleon of thinkers as far as Trotskyists go, he was never in some of weird micro party stuff that others got into. In general the book is a good introduction to Trotsky's writing from a Trotskyist perspective.
I think it would, the book I have is a collection of essays and fragments, so a wide look at Wilde.
Some of the Grundrisse sucks, it's a set of working notes, but there are really good passages in different parts. I wouldn't read the whole thing, just hunt and find for sections. It's not a systemically planned out work so it goes all over the place.
It's not like essential reading, but fun analysis on contemporary liberals, and the drawings are fun.