This looks to be sensible and do-able. A question though: will this apply and be valid right through to the early epic tier?It is possible to do some quick monster tweaking without homogeneizing them so much. For that, I'd recommend the following steps.
- For standard monsters, use the original damage expression and add bonus damage equal to one half the monster's level. If the monster is a brute, make the bonus two thirds the monster's level instead.
- Give soldiers a -2 penalty to attack rolls, and brutes a +2 bonus to attack rolls.
- Give Elite monsters a -2 penalty to AC and highest defense.
- For minion monsters, make their damage equal to 4+level/2, or 5+(0.6*level) if they are brutes.
- Skip solo monsters altogether, or be prepared for long, easy (and boring) encounters.
This will give you monsters that are close enough to modern standards to have fun, challenging encounters.
Thanks.