If web developers would be so kind as to consider my compute resources as scarce that would tremendously please me. This sort of thinking is important, you just need to be selective about when and where you apply it.
Then imagine having access to real computers on real networks hit your site over whatever time horizon you want. It would be great. If this could somehow be done on mobile that would be great too (maybe in a push notification way "1x test ready to run, click here to start", app opens, does it's thing, then closes)