Color me confused but how are they not supported? If you want a str based rogue, make one. You need to use a finesse weapon to get your sneak attack damage, but the rules pretty clearly state that you choose whether that finesse weapon is taking your str or dex bonus. What else do you need?
The only down side to makeing a str based rogue is a lower ac.
Also HP.
That is the issue. I want ambush warrior.
The rogue is too squishy, especially when you don't go heavy on Dexterity.
The fighter can fight but lacks any features that favor stealth or ambushes.
The 3e UA and the 4e PHB both supported this type of warrior. A warrior who can fight both fair and unfair.
Bugbear style. Batman style. UniSoft Assassin style. You see two guards at the door. You sneak attack one and and melee the other.