>I find it disturbing when people just think V2 should be there to remove any weaknesses from various troop types.
Some people maybe, but you are over-generalising. It's a straw-man line of argument.
And consider that a significant portion of the changes are introducing weaknesses to certian troop types...
>a) Historical
That's where the arguments come in. Historical is about opinion, hopefully backed up by some evidence (much of which is contradictory, unfortunately), not an objective fact.
In my view, it should be hard to make irregulars do complicated manouevres. But it should not be hard to make them turn on the spot to face the BG that has just waltzed around their flank and is preparing to charge them in the rear, with nobody left in front to pin them. I'm not aware of any historical examples of this happening.
Apparently an irregular rider can manouevre a horse pretty well...right up to the point at which you stick horse armour on it and it becomes a cataphract. Perhaps historically he turned the horse by dismounting and pushing, and it is now too heavy for him to budge quickly

Give him some rudimentary drill, and he suddenly realises he's been going about it all wrong, there's a much easier way, nd for a measly 2 points he becomes much more effective.
Some people will point to one particular battle (Carrhae) as proof that shooty horse armies were invincible against non shooty horse armies and the way they are treated in the game is therefore historic. Others will point to other battles in which horse archers were held off at a greater distance and their shooting achieved nothing concrete, or risked getting too close and hit by shorter range missiles, or caught by a sudden charge.
And then finally there is a sizable body of opinion (not mine, but valid nevertheless) that historical simulation is less imprtant than a "fun" game, whatever that may mean to different people.
>b) Balanced by other pros and cons
A nice idea, but in practice the balance is missing in FoG in a number of areas. Some troop types and capbilities are clearly over-powered or under-costed, and others are vice-versa.
LH may be rubbish in close combat against heavier troop types, but if they can never be forced to fight against the heavier troop types and are having too much fun destroying them with shooting, that point is moot. Barbarian foot armies should have a chance of wearing down Romans by superior numbers, but the lack of a fatigue mechanism, and the likelihood that the Romans can destroy successive lines of hairy foot without losing bases or cohesion is a problem here.
So V2 changes are intended to address various issues, have been arrived at after extensive consultation and playtesting. To draw conclusions about the motivation and impact without actually having tried them extensively yourself (I assume?) seems a bit unfair. Especially when several people are telling you that superior Roman legions will still cut through those barbarian foot easily even after the changes, and that the results will be (in their opinion) more historic than the current situation!
Me, I'll wait to try them out before reaching a definitive conclusion, but most of what I've heard sounds like it should be an improvement.