Best Separatist team for Padme?

General Grevious isn't a very strong attacker until he reaches Gear 12-13 or has all his Sep Droids to support him. I would recommend dropping him and using Geo Spy, unless you plan on gearing him up really soon.

Spy can one-hit Padme in the right conditions, which makes the rest of the event much easier. It helps if you have Soldier and Poggle to call him to assist to get his buffs stacked (I'm not sure if that works, as he won't score Crits to gain Stealth, but he might be able to pseudo-stack Crit Chance Up), and Poggle can give him Offense Up, even without Brood Alpha.

Once Padme's gone, Nute's lead and Dooku should be able to work through the other event toons fairly well, with Spy's damage as well.

Side note: I'm not sure why, but the AI loves attacking Jango while he has Damage Immunity for some reason.

It depends on what your plan is. Magnaguard will generally taunt until he dies and is more bulky, while Sun Fac only taunts when the ability triggers and has self-healing. Both of their counters can give Padme the undispellable Prot up, which can ruin the Spy attack, but that's better than Nute or Spy somehow dying to a second-wave onslaught.

I'd stick with Magnaguard for now. Both should work, though.

(Strategy advice for the event battles is also very welcome)

Nute, b2, spy and pretty much +2.
Kill order is easy padme > fish > anakin > gk > mace. You can easily change order of fishbindo and jka if one of the already used their ress as a heal or didn't use his aoe.
The team you got will most likely auto tier 5 of her event

"TargetEadu;c-2159852" wrote:
General Grevious isn't a very strong attacker until he reaches Gear 12-13 or has all his Sep Droids to support him. I would recommend dropping him and using Geo Spy, unless you plan on gearing him up really soon.

Spy can one-hit Padme in the right conditions, which makes the rest of the event much easier. It helps if you have Soldier and Poggle to call him to assist to get his buffs stacked (I'm not sure if that works, as he won't score Crits to gain Stealth, but he might be able to pseudo-stack Crit Chance Up), and Poggle can give him Offense Up, even without Brood Alpha.

Once Padme's gone, Nute's lead and Dooku should be able to work through the other event toons fairly well, with Spy's damage as well.

Side note: I'm not sure why, but the AI loves attacking Jango while he has Damage Immunity for some reason.

Between Magnadroid and Sun Fac, which would you say is a better tank for this event?

I had to make the same decision some time ago and I decided to go for bugs. They do not neeed very high gear for this event (IX-X is well enough) and they are useful in other events (GAC, Separatist might, Teritory wars)

You also use a full geos team by farming Geo Brood Alpha and gearing up Poggle. Geo Brood Alpha is really good with geos obviously because he gives them tons of benefits like protection recover on a basic, mass assists, and + 15,000 protection and health at the start of the battle.