I found this article interesting:
Kazantsev, I. G., Matej, S., & Lewitt, R. M. (2005). Optimal ordering of projections using permutation matrices and angles between projection subspaces. Electronic Notes in Discrete Mathematics, 20, 205-216. (pdf available from Google scholar)
Basically, you can just add a fixed angle (based on the golden ratio) at each iteration, and it ensures that consecutive angles are well spaced apart but that the whole circle is visited.