For some reason this reminded me of Radiohead's "There There". I think it might be the deep synth?
Anyway, I think you can easily make this tune way more interesting by automating the synths a bit. Even the slightest variation in sound will make the listener more intrigued in what's going on because as soon as you notice a pattern you'll start getting tired of listening to it. That's why Rhythm & Sound is able to keep you listening because things change ever so slightly.
So if you simply were to fool around with filter, introduce some reverb, delay or something you'll automatically keep your listener interested in what's going on.
I think you're on to something with "Some Kind of Hidden Terror" because it's both varied, you introduce new elements at a fairly nice pace, and it just sounds better :)
Keep it up! :)
It's kinda up to the mood I'm in (using more or less time for doing something). For 'This Time' didn't do much automating and it's a bit hasty made anyways but it has got some nice elements. With 'Some Kinda Hidden Terror' been testing some new stuff again and it usually brings some results. But theres always possibility to go back and tweak..