i like the goal of the team, luring in stuff for subchamp and using some surprise sets but i have a few suggestions -
First, i would suggest scarf heatran over rotom-h - you have no reliable pokemon to take fire blasts from heatran or infernape and this team is obviously very offensive. heatran can switch into most of the attacks from these threats and then ko with earth power, only having to watch out for opposing ones. starmie can revenge yes, but you are going to have a very hard time switching in with no defensive investment as well as no recovery (and they will just switch out). starmie is very good at luring in scarf pursuits for machamp to set up anyway, rotom doesn't need to do that, and rotom isn't really helping you vs anything that heatran wouldn't beat anyway (scizor, jirachi, etc).
on salamence, i think you need to ditch dragon claw for roost or outrage - there isn't much you are really going to dragon claw and unfortunately, claw doesn't have the power to threaten a lot of stuff. with roost, you gain survivability over a long period of time, allowing you to be a constant threat (especially with no rapid spin), but with outrage, you get a much more reliable attack, being able to 2hko blisseys and damage any switch-in much harder.
looks like an interesting team, good luck.