You are expected to do an attack at the end, so my guess is it's working as intended. They did add an alternative upgrade, Light On Your Feet, that lets you turn more.
True that i'm supposed to attack at the end, but also true that if you miss the moment to attack you have no way to stop the run. I just had my tank run some 20 30 meters, twenty not two, after hitting the target and fall in the void of the Deep Road with me trying to stop him right clicking and giving commands like War Cry; no fun.
Having the bull stop after hitting his target, and do nothing but auto attack if attacked, or at least be able to stop the run not just the exact moment you impact the target, would IMHO have more sense
The workaround is to jump. Everyone is getting hit by this bug.
And more than ten patches havent fixed it 
I think, judging from the videos posted, it's because most players dont use a lot the tactical but play real time
No change to mounts. Well, except that if you add the Qunari Spoils DLC, some of the mounts get bugged and will crash the game when summoned.
Good to know even if i have just the three main DLCs: Deep Roads, Hakkon and Trespasser and played ATM just Deep Roads; the others just looked cosmetic
Grat Bear looked the best to me too, combined with those abilities that replenish mana/stamina on kills/crits. I'll give a look at the link you posted.
Being able to remove and reuse them is good to know; i'make a few try myself also considering that my hard campaign has become a breeze
Last question:
I read somewhere that the gold nug statue, that if i remember is the thing inside the misterious expensive box you buy at the top store of Val Royeaux, allows to share schematics and recipes beetween different playthroughs.
That means that my new character will have the schematic of the uber weapon i just got in the deep roads? Even if crafted with iron, cotton and nugskin it will be a huge lot more powerful than anything i can get in the hinterlands unless i need to have the gold nug in both playthrough that means having 10k to spend thats a lot for a new char.