Monster Attacks

[aravol]

So, in preparing for a one-shot campaign, I realized something - a Zombie Hill Giant, despite being 12th level and dealing more damage than a critical hit with a shotgun, has a +3 to hit. The concern for me is thus; should monsters be using Strength for attack Rolls or Dexterity?
Strength seems silly as the basis for attacks rolls for most characters, but then again, I don't plan on giving the option to characters, at least not without maybe a feat.
In the case of Dexterity, though, you're not dealing with fine control over attacks, you're dealing with wide, sweeping blows, so this seems like a bad basis for monster attack rolls. Most of all, though, is the fact that since most monsters have rather low Dex due to their size, things like the aforementioned Hill Giant Zombie come out with ludicrously inaccurate attacks.

Next basis: since they're not going to use Str for Parry attempts, most monsters are shorthanded by the reliance on Dex while they have huge Str scores.

So, house rule: at least for monsters, the higher of Dex or Str is applied to attack rolls, not just Str.

Any feedback?

[cthughua]

You will find that many creatures are direct ports from their D&D counterparts. The downside is that often DEX was neglected in such lumbering brutes and therefore they are rather inaccruate. The upside however, is that because of their ludicrous damage they are are quite often serious threats, even if they can only hit a Hero 5% of the time. Of course, many times the adventurers will dispatch such creatures before the odds stack against them. It's not unreasonable then to give them the feat that lets them do 1/2 STR to bonus to hit (name escaping me). Otherwise you'll need to completely redo the undead (and other low DEX foes) in favor of better balancing.

[aravol]

It would seem True20 has better balance towards fighting human foes.
This is something that could be fixed

[iwatt]

It's not unreasonable then to give them the feat that lets them do 1/2 STR to bonus to hit (name escaping me).

Smashing Blow.

This coupled with All-Out-Attack, I use for my Elite lumbering monsters.