If it's not intended then Lone Wolf run is pretty much impossible since you will always get CC'd to death. They even have a talent where you can "Flee even when enemies are nearby" so the whole "Shoot, run, flee" is pretty much intended and if you want to do Non-stealth melee lonewolf, you will have to abuse that flee talent instead of Guerilla.
The best thing about Divinity is that you can play almost any strat and still do well as long as you don't go 100% min build RP that specialize in sucking. The whole "Guerilla tactic" is pretty much just planning the entire game strat around Preemptive strike until it becomes a 1-1 and that is just one out of many strats we currently have that can be used to clear the game.
If the game actually starts balancing the whole game around a certain winning strat then that is actually when it becomes a flaw and need to be addressed, like how the whole game is planning damage build based around rage or how everyone will play with 1 in Scoundrel and Pyro just to have Haste and Adrenaline.
