I have mixed feelings about Timey Wimey.
I agree that the Time Travel premise works better as a frame work for episodic adventuring, but I think using Time Travel as a plot device can be interesting too.
I think accepting that time can change and little inconsistencies shall arise in a 50 year long story is fine, but I don't want writers to actively use that as an excuse to not even try.
I thought the idea of stretching a long ass arc over 4 years and in reverse was a little emotionally constipating in terms of gratification, although the big pay-off on Trenzalore was worth it.
I think the deconstructional elements of the show examining the Doctor and his life-style have lead to some great stories, but I kinda wish they'd stop self-analysing so much, try to leave the subtext unspoken and just get on with some cool adventures.
I think it's fine to be mysterious and secretive, as long as the tease isn't painfully drawn out, and the answers aren't overwhelmingly boring.
And more importantly, the answers/twists should enhance the previous stories, and give new meaning to character actions and events, instead of just making them seem dull in the light of fore-knowledge.
I reckon you need to take Time Travel with a certain amount of salt, since it seems to operate in different ways depending on the circumstance, allowing the writers some narrative leeway, but in some cases, if you really think about it, the whole concept makes no logical sense what-so-ever, so you either have to choose to role with it regardless, or forge some convoluted head-canon to justify the faulty mechanics.
I really liked The Lodger, and Closing Time, because they were fun adventures, that perfectly mixed the larger than life alien elements with the domestic drama of everyday life, and it anoys me when people describe them as 'filler', just because they don't link into the over-arching series plot.
That became more of a list than I was hoping but meh, it gets the points across.