One of the reasons I really admire Wittgenstein: he felt no compunction to "engage" with authors. Unlike philosophers who make careers on doing glosses on glosses ("I'm doing my thesis on Derrida's
perspective on Heidegger!"), Wittgenstein focused on what he considered core philosophical questions and dismissed the "cult of academic personality".
We are not compelled to directly engage with an author's arguments; at times (in my view, most of the time) it is more informative to make sense of the socio-discursive relations that make those arguments possible. I recognize this is a step back or away from the level of analysis you've been using, but I think it's useful here.
--One more thing: as Carrol has pointed out repeatedly, there's no way to read and critique everything. Sometimes the best response to a text is to--leave it aside and read something more interesting.
Miles