Hmm...I won't worry about TTY being dominant because, frankly, I don't see it happening nor think it's going to happen anytime soon. Didn't Saina at age 28 whom some regard as a has-been pushed TTY real hard in two tight sets yesterday ? And Chen Yufei , who is far from her peak at the young age of 20, is able to come close to beating her, only losing by the narrowest of margin today, 19-21, 20-22, and she's improving.
Let's not forget Intanon Ratchanok who until now has a positive H2H of 11-9 over TTY , winning their last three encounters. apart from that, we should expect a couple of young up-and-comers rising to challenge her, not to mention we still have the 23-yr-old Nozomi Okuhara and the 20-yr-old Akane Yamaguchi, if not PV Sindhu and Carolina Marin.