Nano tech effect

[d4rk3lf]

I like it. :
I don't think you should replace bricks, here's what I would do: 

I'd definitely integrate rotation, and scale (animation) into them, not just to appear suddenly. 
My samples are not representative (there's much better online), but I'd make rotation something like this I did with Particle flow: 
https://www.youtube.com/watch?v=5WpUfmFSNOY

(there's a sample in Tyflow that rotates triangles in similar way). 

And I'd make 2 or 3 passes of animation, something like I did here: 
https://www.youtube.com/watch?v=cWUKIua9kDQ&t=5s
(when I say 2 passes... you see how I stop them for few frames at size of 90%, and then after a several frames they go from 90 to 100%) 

So, in your case, maybe 3 passes, that use the same reveal approach (that you already have, and I like it). 
1) Particles appear from 0 to 50% (animated scale), the same way they appear now) 
hold them for 5-10 frames with "time test" operator 
2) Particles rotate 90 or 180 degree 
hold them for 5-10 frames with "time test" operator 
3) Particles scales from 50 to 100% size. 

Now,. I am not sure how accurate this would be with some Avenger movie (never been a big fun), but that's something I would do.