Well I can understand your view. Even I've stopped gaming on my XPlay since gameloft slowed down on releasing new games for android.
And myself I'm planning to get the new Xperia S after few month's of its release or wait till the dev section in XDA gets little populated with custom kernels/roms etc. And I'm not sure about carrying another device(Vita) in my pocket except my phone.
But by next year hopefully we see an XPlay 2 with better specs and much better support but I highly doubt Sony will do that since it will create competition against its own product which is the new Vita.
But on the other hand I have fingers crossed for HTC to release a phone with gamepad. Why so? Because latest rumor has that some new HTC devices will get PS certified from Sony. Which means there are chances of another phone with gamepad or maybe it will simply be like a "PS certified" device like Xperia S. Which makes no sense at all.
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Waiting for or hoping for some more games with depth, otherwise I may get a Vita as well.
As for HTC I don't see them making a niche phone like this, and in fact I think its entirely possible we will never see an Xperia PLAY 2, as they 1 wont want to compete with the Vita, and 2 mucked it up the first time around.
EDIT: If I have to wait for ICS on the PLAY to get the Playstation Suite I may as well get a Vita and ditch this phone at my next upgrade, because Verizon hasn't even given us 2.3.4 yet, gonna be a cold day before we get ICS.