Since Laxius S is planned to be the final saga. I did hear there was a planned game called Crimson Sword, a Laxius single game, which supposely in development heck. I hope your not scrapping Laxius series after that. Maybe there might be a Laxius Spinoff?
Check out Google Trends on Laxius Force: https://www.google.com/trends/explore?date=all&q=laxius%20force See, Laxius Force isn't much a hit today on Google. They seem to have moved on to other things (FNAF, Undertale, GoAnimate, and other stuff like that)
I have some new predictions.
-New heroes (mechanics, gunners, etc)
-Modern technology gets developed in the Deport
-Laxius Blast (a gameplay skill based of Pokemon's Mega Evolution)
-The heroes will end up in the past destroyed enemy territories (Evil Tower, Lucida Tower, etc)
-The mysterious one that killed Sarah's family might be a playable character!
-They might travel through Sankt Leona and other places not mentioned in Laxius Force. I wonder what they were up to in the Global War...
-The games will be shorter but after you beat it you can go into Laxius Hero, and then into Ultimate Laxius mode.