One interesting story could be about a character having to face the challenges of pregnancy while on a dangerous mission in Andromeda. Maybe she has to protect her unborn child while also dealing with alien threats.
Another place to check is FanFiction.net. There are many Mass Effect Andromeda stories there as well. Just type in relevant keywords like 'Mass Effect Andromeda' and 'pregnancy' in the search bar to find what you're looking for. However, be aware that the quality can vary widely on this site.
One aspect of Mass Effect Andromeda x Halo fanfiction could be the crossover of characters. Imagine Shepard from Mass Effect meeting Master Chief from Halo. Their leadership styles are different but both are highly respected in their respective universes. In fanfiction, they could team up to face a common threat that combines the enemies from both games, like a new type of alien that uses both the Reaper and Covenant technology. This would create a really exciting and unique story.
A plot could center around Jaal's relationship with his partner during the pregnancy. They could face challenges such as financial concerns if they need to prepare for the baby in a new and unfamiliar environment. There could also be relationship - building moments as they attend prenatal classes together, if such a thing exists in the Mass Effect universe. Jaal might also have to deal with his own insecurities and fears, which his partner helps him through.
Overall, the story of Mass Effect Andromeda is a mixed bag. It has some exciting elements and character development, but suffers from pacing issues and inconsistent writing in parts.
If Iron Man joined the Andromeda Initiative, he would bring a whole new level of expertise. His engineering skills could help in building better habitats and defenses for the colonies. He could also train the Initiative's soldiers in new combat techniques using his suit's capabilities.
If Jaal is pregnant, it could change the dynamic of the places he frequents. For example, on the Tempest, the crew might have to make adjustments to accommodate his needs. There could be a new area set up as a nursery or a more comfortable resting place for him. In the outposts, his presence could inspire hope among the colonists, seeing a new life about to be born in this new galaxy.
One common theme is self - discovery. The original characters often find themselves in a new and strange galaxy, and they have to figure out who they are and what their place is. For example, an OC might start as a loner but learn to be part of a team.
One great crossover might involve the Ryder family from Mass Effect Andromeda somehow ending up in the Naruto universe. They could team up with Naruto and his friends to fight against a common enemy, like an ancient, powerful jutsu - created creature that threatens both the shinobi world and the new galaxy in Andromeda. The different powers and technologies from both universes would make for an interesting combination.