I'd like to be able to use my strength for a bow or crossbow so I can make a plate Warfare warrior that uses a Bow.
Well, that is common game mistake that bow requires Dexterity only.
Maby for short horse riding bows with effective range up to 40m. But for classic foot bowman especially longbow you need a hell lot of strength.
When you get 80 pound bow (which is pretty average army bow), that means the user need to pull that weight by (mostly) one hand. And do that 10times per minute. Common military drill. Try that by yourself
e.g.
For aim you need Dex.
For dmg. and range you need Str.
Heavy armour might reduce agility only, therfore aim. In fact chest plate armor is ok for archer. They didnt use it, becouse of price, but it is ok.For example, Italian wealthy crossbowman used plate armor chest.
Conclusion:
What archer should be forbidden are helmets, masks and gloves. All these reduce environment awareness, aim and/or speed.
Heavy armor should reduce/cap max Dex. Therfore dodge and aim. Headgear should reduce visibility - which was unfortunately removed since DOS1. That factor should come back because of marksman.
Marksman should be buffed regarding range. I mean bow (not crossbow) dmg and range should be linked to Str. Generally, 1vs1, Marksman should be able to get down mage if marksman has range advantage.