Hey, Don asked me to rate this team. Sorry for taking so long, but it seems that the other raters have already given you most of the good suggestions. So due to lack of any major suggestions I could make, I decided to test all the variations of your team and help you decide what changes work the best.
Out of all the rates, I like: Zeb's Charizard, and Bastiodon suggestions, ium's Sawk and Ludicolo suggestions, and Raseri's Exeggutor suggestion. Musharna is also an acceptable option if you are really afraid of Ice attacks, though the utility of Lum Berry and Sleep Powder will be missed. I don't like offensive Ludicolo for this team because prefers Sun rather than Rain overall (mainly for Solar Power, Moonlight/Harvest, and maintaining Fire Blast's BP). I also think that Ice Beam is better on Ludicolo than Scald to hit opposing Grass-types that ignore Leech Seed.
For Bastiodon, I find that you rarely get a chance to use Metal Burst effectively. You usually prefer to set up Rocks, and either your opponent can't damage you too much (in which case Metal Burst is less effective), or can inflict massive damage (in which case you have to choose between them). I find that Protect has great synergy with the rest of your team, especially when you are scouting Choiced mons like Sawk and Braviary. Seeing as Bastiodon is Taunt bait regardless of what move you choose (even Stone Edge doesn't really help), you might as well use Protect to maintain your team's overall health.
If you choose to keep Armaldo instead, I also agree with FLCL's offensive Armaldo suggestion, though otherwise I prefer the bulk and utility Bastiodon provides. You would also lose Stealth Rocks, which is not ideal.
I think that you should stick with Rotom-F for your team. Opposing Electric-types are annoying for your team to face, and Rotom-F does check Rotom-A more effectively. As for Sawk, Knock Off is your best move against Misdreavus and Duosion; use it.
Your team does lack priority and a reliable way to handle Zangoose (though you do revenge kill it easily enough). That does mean that opposing weather can really put a hurting on you (which also is why I like Exeggutor a bit more, as well as Protect), since your best defense against them is to weather the Rain/Sun turns. Hail isn't much of a problem for you however, so that is one excellent aspect of your team. Finally, your team hates being paralyzed since you rely on your faster mons to revenge kill many things; this makes Heal Bell on Musharna the preferable option, or else Lum Eggy to be a status absorber. Other than that, your team is very solid.
Bastiodon: Protect>Metal Burst
Ludicolo: Specially Defensive>Offensive; Ice Beam>Scald
Sawk: Jolly Knock Off>Adamant Stone Edge
Zeb's Charizard, and Bastiodon suggestions
ium's Sawk and Ludicolo suggestions
Raseri's Exeggutor suggestion -OR- Zeb's Musharna suggestion -OR- FLCL's Armaldo suggestion