The original intent of IDPA was for it to be a vessel for people who CCW to get out and practice in a fun, safe and practical manor (as 'practical' as reasonably relevant training can be obtained within a structured competitive environment would allow).
It isn't the end-all, be-all of training and was never intended as such as Larry and Ken pointed out, but it was something worthwhile.
The whole DVC concept was designed as an equation with equal parts, and the 1sec. Penalty I think more closely reflects that than the current equation.
It is completely skewed in IPSC (a concept they make no bones about since it's slide into a full-on 'sport'), and was watered down early on in IDPA and I believe, the primary reason Ken and Larry pulled pin.
I shot it for a couple of years and the one thing that really bugged me about IDPA were the 'subjective' rules designed to separate it from feeling like 'IPSC light' to what the originators intended, and the different individual competitors stance on the ideals. You could go from one bay where the ideals were upheld and see competitors take procedural infractions for 'gaming' the stage to ones where they cleaned everyone else's clock with poor marksmanship, poor gun handling skills and utter lack of regard for the scenario if the SOs felt as they did - it is just a game. You'll get all sorts of excuses like 'oh, we don't have CCW in Canada, so why pretend to think it has any training value' to 'it isn't like you win prizes for your standing, so why does the score matter?'
It's all bullsh!t of course. If it is worth organizing, it is worth doing properly.
If it is worth keeping score, it is worth doing properly.
If it is worth getting together, practicing, getting proficient with firearms, it is worth doing properly.
By letting competitors go as fast as they want and play fast and loose with the rules, then you have people pushing limits to circumvent those rules, and you maintain a competition that has divisions within by competitors with differing views on where the competition should go. It then remains watered down and ultimately irrelevant to its intent.
While it was fun still, those aspects of it made for frustrating matches and one of the reasons I ultimately threw in the towel.