The special one
I just looked at Novak's schedule and he doesn't have any tournaments scheduled between RG and Wimbledon. I think playing Queens last year really helped Novak get his grass preparation in for Wimbledon, despite losing the final to Cilic. He was so low after RG last year and needed the confidence boost before Wimbledon. I think playing Queens again would help him again this year, surprised he isn't playing tbh.