Remember, aside cleaning up logs, you can still be traced if you "always do the same".
When you are supposed to be stealth, you're supposed also to not be fingerprinted. A new attack will always require a new and innovative technique. Want to reuse code? For sure, just make sure you update it, let's say, optimize it more, or tweak it a bit. At least that way it will be treated as a single event, it won't be chained with others. Unless of course you're attacking an array of hosts by a single reason, that would be your loose tie.
Beware of anything that is "the same" always.