Yeah, would be quite cool , wouldn't it!
With my limited electrical knowledge (I suspect there are proper auto electricians on here, of more use to you than me with my 8 year old micro-electronics / software engineering training) I'd say "possibly", depends on the output on those trigger wires.
One assume the module outputs a "close" signal to the window switch wires for a certain period of time, to ensure they fully close before shutting down (or perhaps monitor resistance to determine they're shut when the motor stops turning?)
The "trigger" wires to the locking mechanism, etc, could work in one of two ways I suspect. 1, as above, providing power whilst the windows lock or some other period of time, or 2 (and, I guess, more likely) they're simply trigger / signal wires - more instantaneous.
for the blinds, you'd need something similar to the window closing system.
If it does output power for some time, (long enough to close/open the blinds) then you could simply wire this trigger to a relay (or set of), and from there provide 12v into the blind circuit.
But if the trigger wires just carry a quick "trip" signal, then on their own, they'll not do enough to shut your blinds (they'll judder and move ever so slightly, if anything, may not be quick enough to fully energise the relay).
Assuming the latter, i.e. that it only outputs a "trip" signal, then you'd need that to drive a seperate circuit to provide power for a certain period of time (or, again, to monitor the motors somewhat and determine when to stop) the former is probably doable with a simple timer chip circuit. (2 feeds into circuit, perm 12v/earth & trigger 12vs & earths; trigger kicks off a timer, which provides a 12v output for X seconds, run into a relay to trigger the window blind motors).
There might be some kind of halfrauds circuit which does this for you, or, I suspect, one of the old 1 trillion in 1 electronics kits may have a circuit you could copy & build out of discrete components!
G.
they're cheap enough & virtually came the next day!
I may have a crack if i get the garden sorted this week 
Missus has plenty lined up for me while i'm on me hols 