That's a seriously good physical RU team, but that does mean another thing: where there's prey there's predators, thus where there are physical attackers there'll be physical defenders. This is the problem. Although many members of your team can hit, say steelix super effectively, this is still not good against 500 defence. Yes, you have nidoqueen and rotom c, but the latter is completely walled against steelix. Thus, you may be forced to rely on nidoqueen to stop him, but burn is another option. Then we have dusknoir. Your spiritomb can counter it, but it will be forced to shadow sneak as opposed to sucker punch (unless you have flawless prediction) due to dusknoir usually setting up, burning, etc. worse, it is specially defensive already, meaning that you could end up with a tough fight.
All in all, I think modest on your 'queen, unless you test it and actually have some outspeeding problems. And as I think someone else said, improve coverage on your rotom- I hate rotom c because of its speed and offensive capability.
Anyway I like this team, and that feraligatr set is good, seeing as I just can't find one to work for me. Although, dragon dance is also good because suddenly you outspeeding way more, and in your wake you will leave many more kos because you can use waterfall more- use aqua jet for anything that would outspeed you/for revenge killing. I never quite got the hang of an boosting sweeper, cause you can lose so much health doing the boosting.
Another point, should you have trouble with physical defenders, my friend made a nasty octillery set, which would have shellpass onto it, then a huge special attack, water spout and stuff like thunderbolt can kill almost everything. I believe crustle doesn't get baton pass, but there are others. Only try this if you really believe you can fit it in your team.
Hope you do well.