the whole concept of this idea of a group of MIB-ian men going around doing things to make "adjustments" to events. I found that vastly more entertaining and interesting than other aspects of the movie and there's a lot there that could be explored and, really, a TV series would be the best place to explore all of the aspects of it fully.
I agree Trekker4747
There was a show development like this in 2010 pilot season:
“Murmurs” Sci-Fi time-travel drama by CBS in development
starring Will Smith for SyFy for 2010.
Nothing became of either yet.
Yes a Adjustment Bureau style TV series with standalone episodes would be good along with character development backstory arcs over multiple episodes and the entire season.