Remember the more pid's you add, the more the elm monitors from the pcm no transmits to your phone, possibly slowing it down. A page or two of the most necessary are all that's needed.

You wouldn't need to load misfires/history unless getting them... It would be a waste of resources.

as mentioned, temps, IAT, fuel, spark, KR, intake, rpm, vac/boost, maf, etc... What's nice is recording the runs and chrecking them too.