Yeah, I'm about 2/3 of the way through and agree with the points above. To make the pacing a little faster, the intro and tutorials could have been a bit shorter, and the joining zones between puzzle rooms that happen throughout the game should have been a lot shorter. The puzzles do start to get much trickier later on though, particularly when you get access to all dimensions.
Star Trek fans should instantly recognise the Professor voice-over as John de Lancie
and he does a great job in role.
I'd highly recommend it though, this game is what would happen if you crossed the puzzle chamber mechanics of Portal with the aesthetic of Dexter's Laboratory.