Of coz it has some plot holes I agree, T.
But then again the main plot is entangled with many sub plots which makes it harder to keep on track and fill up the holes without blemishing plot and sub ones. You see the mere fact that this additional inclusion of sub plots degrade the quality , But in my point of view it serves beyond my expectation even with few holes.
To be honest I havent seen this complex Sci-Fi ever. Do me a favor and name me 3 I'd like to check them.
" money grabbing twist" I have no clue what this means. But as I suspected your judgement on this movie has severly clouded by the fact that everybody loves this one and lives under the illusion that just liking this movie is make them classy. Just because it turned out that way doesnt mean the director was looking for it.
Take Minority Report. AFAIK almost everyone likes it but still its awesome sci-Fi . But it gotten its insane popularity coz of the name of Spillberg.
However I agree theres some parts that Caprio crying over his dead wife and trying to live in her memory scene arent exactly not usual Nolan Type
But its not mediocre and definitely not boring
I wouldn't say this was really sci fi, it's rather fantasy
it's undue complexity serves no purpose for me nor for the plot, it's unnecessary. that's exactly what I meant by the 'money grabbing twist' thing, cos it was deliberately made that way to make it look cool, so people who hasn't seen better may think it's the best thing ever 
that's also why I would say this is bad cinema, the prime purpose of art should not be to make money. but what else to expect from holywood these days. I wonder if studio heads had no authority over the made of this film, how it might have come out, solely out of the hands of nolan. but no, they got money to make. you acknowledge it or not. here's a few sci fi films that actually piss on inception. for the heck of it I'd start with excellent 'Matrix'
stalker
blade runner
2001 a space odyssey
solaris
Ghost in the shell
city of lost children
district 9 (much much better)
contact
brazil
wall e
and many more.
