Re: Doctor Who Season 4: April 5th!
Since you asked, Kevin...

Because I find him to be a very poor script-writer. I haven't particularly enjoyed any of his scripts (with the exception of his first two xmas specials, and, oddly, Love & Monsters). He focuses too much on soap-opera elements (I'm all for drama, not so much melodrama) and Deus Ex Machina. In addition, these past few seasons have been degrading in quality quite remarkably*. The Doctor's Daughter and The Unicorn And The Wasp have been as embarrassing to watch as some of Sly McCoy's eps.
David Tennant's Who, at times, when he's being serious, is brilliant. Unfortunately, the norm for him has been to ape about like a moron, and for that I blame the executive producer.
Conversely, I think Moffat has done a splendid job so far; all his scripts have been great. Blink and The Girl In The Fireplace especially.
We needed a change - and Moffat would have been my choice, with maybe Paul Cornell second. Whether Moffat will improve the general quality... well, I hope so. We'll see.
RTD has had - what? - five years at the helm? That's probably enough for any exec prod, just as it is for any Doctor. But I'd still like to keep RTD for the Xmas specials, because they have more of a pantomime feel to them for which I reckon he's well-suited.
(* But what do I know? Fans on Dr Who forums consistently give episodes 5 out 5, even for dreck like "42", and the general public seems to love them too, so I keep shtum. One or two great eps a year is better than none.)
