I'm fine with Sony not showing any first-party games for Vita at TGS.
To be honest, their handheld output from Japanese studios hasn't thrilled me anyway. Gravity Rush was ace and I'm looking forward to Oreshika, but otherwise we've just had two monster hunting games which is a genre I just don't care for; and a few F2P bits and pieces.
Decent stuff for getting the Japanese market excited; not great for getting Kresnik excited.
Besides, the only first-party game Sony announced at TGS last year was Soul Sacrifice Delta. Everything else we already knew about. The two biggest Vita announcements (Phantasy Star Nova & DanganRonpa: Another Episode) came from third parties.
And I'm expecting third parties will announce some stuff for Vita this year, too. Which is better; because third parties (especially Japanese third parties) are taking up about 90% of my gaming time on Vita at the moment.