Planning out a Multicross Self-Insert with Real-Time Strategy powers. Ideas for settings which correspond to Age of Empires 2's tech level (~1400s)?

[Haydn Waterman]

I've tried SB, SV, and even the fanfiction-specific subReddit and gotten no responses, may as well try it here too. Apologies if this is the wrong place to post, I have no idea where to put this.

So there's a whole bunch of RTS's out there, and I want to do a story where the SI wakes up in an appropriate setting with an AoE1 Town Center, is 'conveniently' put in an awkward position with the locals (seriously, how was he supposed to know that the 'bandits' who killed his Scout were the Kingsguard escorting Aerys the Second to Duskendale to deal with Denys' refusal to pay his taxes?), and has to use his resource-gathering and unit-spamming abilities to 'conquer' the land/s (the Seven Kingdoms).

But RTS settings are kinda bullshit (Units have unlimited stamina and ammunition, suffer no consequence from injury until they abruptly drop dead, and don't get me started on Priests), especially with the Return of Rome variant upping the population cap to 500. So I was looking at other settings to drop the SI into, keeping his old 'Tech Trees' and their separated Population Caps intact but adding new systems with much more dangerous Units, and I stalled out on an early question.

AoE1's Tech Tree caps around the Fall of Rome in ~400AD, a 'fair' matchup for Game of Thrones' pre-gunpowder science. AoE3 takes place with a Tech Tree that reaches the Industrial Revolution, with Musketeers and Cannon I was going to put against Familiar of Zero's ~1700s Halkeginia. And most other RTS games take place in their own microcosm's (Starcraft/Warcraft in the Koprulu Sector/Azeroth, Command and Conquer/Homeworld and their self-contained settings, Dune and Tolkein's respective RTS games fit well into their army-centric lore, etc).

But where do I place AoE2, which has Gunpowder Units like Hand Cannoneers and Cannon Galleons (around the divide between the Middle Ages and the Renaissance, right before guns became standard in modern warfare around the 1500s)? What about other original settings like Age of Mythology's fantastical elements, or Supreme Commander and Total Annihilation's endgame Clarketech (and WH40K's setting is already taken because they have their own RTS's to pull from)? And what RTS's and Settings can the community think of where 'conventional ' armies are fielded, and a random with the power to field armies of their own at impossible rates is an OCP but not undefeatable, would make 'good matchups' or interesting interactions?

Once I've moved on, I don't want to go 'backwards' in Power Levels very often unless it's a 'vacation setting', or they have some unexpected abilities of their own that allow them to match-up fairly against the SI's armies, so any considerations should be listed before I go further than the first AoE1 vs GoT matchups.