Brutal DOOM is not only a weapon mode who buffed the weapons:
The zombies have more HP than Normal doom and shoot faster than the normal one who is just "walk around, shoot 1 bullet, continue to walk a little and then, die with 1 or 2 bullet of the pistol of Doomguy, In brutal doom, you need to hit the head to kill them quickly (and it can hard to do it, but you can use the scop mode with alt). same with shotgunner or machinegunner, they are more reactive and have more HP.
Some ennemies can be killed in 1 shot of SSG, like the cacodemon, or the Revenant, but you need to be really in close range....
Like stuck on a cacodemon but it can be dangerous, same with the revenant, you need to shoot the head really close.
In an other way, Cacodemon can dodge your attacks by, suddenly "dashing" on the air, it's really hard if you try to kill them with a Rocket Launcher.... they shoot the fireballs faster too.
The revenants spam more the little rockets but the splash damage is not so powerful, except if you take the rocket directly on you.
It's like the cyberdemon, he can spam more rocket (like 5) but faster than the vanilla cyberdemon, but yeah, if you take the rocket directly on you, it hurts.
What about if vanilla Cyberdemon shoot only 1 rocket who do a huge splash damage who kill you in 1 shot? You seem my point, Brutal DOOM try to make the gameplay faster with more dodge and with a precis gameplay (you can headhsot the zombies or revenant to kill them faster but it's not so easy).
The point of brutal doom is to improve the gameplay in a way, in the v20, the weapons are more balanced than before and all of them are helpful, the grenade is what we need in DOOM, a weapon a do a rounded trajectory, angle..... (like a grenade launcher), you can have only 20 grenades by bag, but the power is really great, a good way to be tactic. The grenade is maybe very powerful but it doesnt explose directly on the ennemy, so it's balanced in that way.
What about the Baron of Hell ? he can charge a 5 plasmaballs but need a little time to do it. He can take an explosive barrel and throw it at you, the Hell Knight can shot the plasma balls faster too.
The imp seems to have more HP too, shoot fireballs faster and can jump on your to slash you.
Like some others ennemies, sergent mark added more balance between strong stuff and weak stuff to make an other new gameplay for the game.....
Some ennemies can be killed faster in a way but you need some skill to do it, if you do well, you deserve your success, if you fail, you was just not accurate/precis. It's not just spam ennemy with autoaim/no-mouselook (but i respect this way to play because it's basically doom.)
For the reload, the reload of the weapons are just for the style but it can be done very quickly (except for the Double gun but yeah balance..) but the best is when you change the weapons => it's done VERY QUICKLY, so, in doom vanilla, when you change a weapon, it can be dangerous sometimes, in brutal doom, it's not more a problem.
The "finish" are not so easy to do, it can be dangerous if you have a strong ennemy near you who wait to hit you when you finish an ennemy....and it gives only 10 hp now....
What about the special difficult 10/12 scale who make the ennemy 2x Faster? I did it with Udoom, it was full of fun. :)
The Double Gun is good but it's only for 2 weapons, the m4 type and Plasmagun, the Double M4 is less precis than the usual m4 and the double plasmagun is not precis at all (for balance with the normal plasmagun). I use double plasmagun against Cyberdemon, Master Spider (from far) or against some ennemies waves....
Each weapons has really his role, the mancubus weapon is pretty helpful too (fun to burn a zombies who go everywhere and burn the other, they start to attack the burnt zombie and then, you can attack them in their back lol :)
I play often the normal DOOM (with mouselook) but Brutal DOOM is a good way to play a faster and very precis gameplay than just classic'... and anyways, maybe DOOM is like a perfect game but it's always fun to have some ideas who can make the game more accurate in some others ways.....
But im happy to see Brutal DOOM v20 is popular, more than before:
https://youtu.be/oSzYliSASKc
The trailer get like 350 000 views and a lot of likes in 1 week...see now.... near 800 000, crazy, im not scared for the community of this mode (:
(sorry for my english again : p