It's a GBA game, where you run a squad of soldiers, with a variety of weapons, from sword to lance to bow to sniper rifles, each having unique attack arks. You gradually upgrade weapons and armor, equipping your units and leveling them up over time. Definitely an RPG game.

The game has tiles that you can move around on, with both you and the AI swapping turns.

IIRC the weapons/armor had 3 tiers of upgrades, and as you progressed through the story you gradually met new units that would join you.

Very grindy game where replaying levels meant you could gather more materials for further upgrades.

I'm really hoping to find it on switch, or an updated version of it.

Any help or thoughts would be really appreciated. Thank you guys and gals!

Side details, I believe the hero characters could temporarily morph to use different attacks.

TIA!