Serious? What happened to mixing with your ears? We are in a sorry state if we need to “fix” waveforms in order to be able to do a beatmatch, seriously.
If you are gonna rely on technology to assist you in getting beatmatched transitions (and I am totally fine with that, I’ll use the sync button at times), then let the technology do the work, i.e. hit sync and be done with it.
On the other hand, if you have tracks that the technology can’t help you with for whatever reason, being able to manually beatmatch is a valuable skill (and frankly if you are gonna bother learning manual beatmatching, you should be able to do it without any visual reference, just your ears), as is knowing all kinds of transitions to use. There is no law in DJ-ing that you have to beatmatch every track. So if you run into a track that you think is not the best for a beatmatched transition, be creative and go another route. This keeps your sets fresh as well.
Just my two cents.
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