- Is it better to have offensive mons that can take hits, or defensive mons that can hit hard?
Well, a hard hitting Defensive mon is more advantageous since it can survive longer while dealing exceptional damage, while a defensive Hard hitter hits harder, but for not as long. Nattorei and Hippowdon are examples of hard hitting defenders, while Scizor and Dragonite are somewhat defensive hard hitters (for their natural bulk and typing).
- What mons are generally good for a balanced offensive team?
Totally depends on what you need. A spinner is always good to use to keep your team healthy. Doryuuzu and Starmie can use it as a filler and as an "expected switch" move, while more defensive spinners include Forretress and Tentacruel. It's also good to have a wall or two, including but not limited to; Skarmory, Blissey, Nattorei, Burungeru, Hippowdon, Gliscor, Porygon 2, Chansey, Dusclops, etc. The rest of your team should consist of either some decent bulky offense, or pure sweepers. The most powerful sweepers at the moment are Urugamosu, Starmie, Gengar, Shanderaa, Sazandora, Cloyster, and Boruturusu (that's only a few, and does not include weather abusers).
- What are some good offensive/defensive cores I can use as a base line?
Ah! I have been experimenting with this, so here's a nice list.
Defensive
-SkarmBliss
-Skarmory+Evo Stone Chansey
-Nattorei+Burungeru
-Nattorei+Tentacruel
-Desukan+Blissey
-Desukan+Evo Stone Chansey
-Mamanboo+Specially Defensive Skarmory (weird, but quite effective)
-and many more
Offensive
-Shanderaa + Scizor
-Mamoswine+Shanderaa
-Boruturusu+Doryuzuu
-I'm still working on these, actually.
- What's a good basic strategy to keep in mind to make a balanced offensive team around?
Know about the metagame and how to counter it's most prominent members. You need to make sure to be prepared for whatever your opponent has, but don't overpredict. Whatever you do, don't overpredict. Make sure if he sends out Pokemon A, you know how to deal with it with Pokemon B. Also make sure to be rational. Poor moves can ruin the whole match.
- What kinds and how many mon archetypes (ex. physical sweeper, special wall) is recommended?
It depends. People usually do either...
-Lead, Physical Sweeper, Special Sweeper, Tank, Physical Wall, Special Wall.
-Anti Lead, Physical Sweeper, Special Sweeper, Physical Tank, Special Tank, choice of wall.
or some variation of the two. You want to have enough defenses to handle hard hitters, but enough hard hitters to leave a mark on the other persons team.