Last edited by Bonkura; 2013-04-28 at 12:34 PM.
UVLS is undeniably, unmistakably the most powerful trinket this tier for both aff and demo. That is, if you can use it properly, else it will indeed be shit for you. But that comes down to player - the trinket itself is ridiculous. That will be for every individual warlock to decide but there's honestly no discussion possible on how OP this trinket is for dotclasses, especially warlocks, but also spriests and moonkins.
With that much haste and the legendary meta, having no shards is, well, something of the past. Pooling shards for really good procs is a dps gain, not a loss, as long as you don't cap on your shards. If you don't have a shard when UVLS procs then somewhere along the way you made a mistake in your dps planning, and anyway, it's perfectly possible to hardcast 3 dots in 4 seconds. If I don't have a shard when I get 3 amazing procs at the same time I simply did it wrong, means I wasted shards on inferior procs or worse, on no procs at all. It's the same for UVLS.
Anyway, as OP gathered, going full haste is simply the way to go now due to the nature of trinkets and the meta.