Here's page 3 of Fusion #15, and it seems Bob has some idea of the weird vibes in the area. Being an interdimensional being made of energy (and able to see energies) has its perks.
Let's see who could be in the house? A dark-haired lady in silvery panelled armour with a long staff magnetically adhered to her back holding a conversation with a blonde wearing a black leotard and red gloves and boots? A young woman of asian descent wearing a leather flight jacket, aviator goggles and a scarf? A brown-haired woman dressed head-to-toe in blue with a yellow star on her chest? A six-foot tall, golden-skinned woman standing beside a very large black woman with wavy red hair and a much shorter pink-skinned woman, all wearing matching military fatigues; 6 orbs are moving around the head of the shortest one and she is holding one in her hand, saying, "So that's what the brown one does."
Don't forget a young lady with no powers and an Australian accent,a mother-daughter superhero team,a gender swapped magical girl who hates his life, another mother-daughter hero team who likes to "melee"...!
I am not sure who you are referring to with the second entry in your list.
When did Kaycee go universe-hopping? Yes, Maverick time-travelled, so I guess that kind of counts. I think Gynostar has not popped between branes, but I have a picture Dave Barrack drew called "Death of Deadpool" featuring Maxima, Gynostar, Superbitch and the Merc with the Mouth. Yeah, I know that a wormhole is (probably) not inter-universal, but we are still trying to figure out the last orb.
The mother-daughter superhero team is Lady Spectra and Sparky.The gender swapped magical girl is Magical Girl Neil and the second mother-daughter hero team is Miss Melee and Kid Melee.
Check them out:
http://www.magicalgirlneil.com/
http://miss-melee.com/
http://ladyspectra.thecomicseries.com/
Now are you familiar with...Sidekick Girl!?
http://sidekickgirl.net/
Oh, I thought you were referring to Sparkling Generation Valkyrie Yuuki, not Magical Girl Neil, for the gender-swapped hero, as Yukki did a inter-universal crossover (CrossOverKill) with Fusion a while ago.
No crossovers of this type here. This is a more surreal meeting point (and made even weirder by the circumstances you'll soon learn about--but refer to the Bubble Theory diagram for some ideas).