Agreed; the most recent prominent/A-list would have been Psylocke/Cluster in Uncanny X-force last year. Last year has been (I think rightly) dubbed "the Year of LGBT"; with Fearless Defenders, Young Avengers, Hawkeye, Uncanny X-force, X-men, Uncanny X-men and Avengers Arena all giving focus and attention to LGBT characters and relationships.