This, however, I like. The issue with blowing up machines I have is that it's kind of a newbie trap. Once you get over it, it's not a danger any longer, but "oh, I read the instructions" doesn't feel like an accomplishment (unlike figuring out your perfect layout). There isn't much gain from it in terms of gameplay apart from the feeling.
Risky overclocks, however, is something that's done knowing the consequences, so that's fun. You could have machines where you disable the aforementioned "circuit breaker" - you can run things higher, faster, better... but then they WILL blow up if you stress/overheat them too much. But now it's not a trap, it's a deliberate gamble.
That, just so that^^^
Melting a cable 200 blocks away because you decided to see if one more overclock would work and plunging your whole base into darkness then trying to figure out how you stuffed up would be just fantastic... The heat buildup/wear of machines is also a very underused mechanic I feel