well judging from the OP's words, he "activated" pedal indicating that he sees the pedal as an on/off switch. In other words the "straight up straight down approach." On the other hand, I could be wrong. Eh where is the OP when you need him to clarify something.
Anyway, I sort of see what you are talking about (I was typing without a piano yesterday and this morning). While the sound itself does not swell, the retardation of the decay makes it seem like the sound is swelling.. I think.. On the other hand, I have been able to get the note to blossom depressing the pedal before I even played the note.
And you said that all good pianists depress the pedal ALWAYS after, but if there is a rest before you play the note, can't you create a much more resonant sound if you depress the pedal before the note/chord?