I don't think the existing 3.0 rules are a problem either, for reasons others have pointed out. To summarize: there's nothing unbalanced about the current rules; and the 3.5e change (a) unfairly penalizes crit-oriented characters, (b) makes little conceptual sense, (c) weakens a perfectly balanced feat and not-especially-powerful weapon enhancement. So the current rules are certainly not anything I'm going to change.
That said, if Andy Collins really wants to make critical hits rarer and more special, there are ways to do it without doing much damage to the quality of the game. Consider this system, for example:
- Improved Critical increases a weapon's critical hit multiplier by one.
- The keen enhancement increases a weapon's critical threat range by one.
Consider the effects of these rulings on the various classes of threat ranges and multipliers:
- Base critical: 20/x2 (+5% critical damage); keen enhancement: 19-20/x2 (+10% critical damage); Improved Critical: 20/x3 (+10% critical damage); both benefits: 19-20/x3 (+20% critical damage).
- Base critical: 19-20/x2 (+10% critical damage); keen enhancement: 18-20/x2 (+15% critical damage); Improved Critical: 19-20/x3 (+20% critical damage); both benefits: 18-20/x3 (+30% critical damage).
- Base critical: 20/x3 (+10% critical damage); keen enhancement: 19-20/x3 (+20% critical damage); Improved Critical: 20/x4 (+15% critical damage); both benefits: 19-20/x4 (+30% critical damage).
- Base critical: 18-20/x2 (+15% critical damage); keen enhancement: 17-20/x2 (+20% critical damage); Improved Critical: 18-20/x3 (+30% critical damage); both benefits: 17-20/x3 (+40% critical damage).
- Base critical: 20/x4 (+15% critical damage); keen enhancement: 19-20/x4 (+30% critical damage); Improved Critical: 20/x5 (+20% critical damage); both benefits: 19-20/x5 (+40% critical damage).
This system has some real problems: it increases similarity between weapons compared to the original system, and it makes the
keen enhancement better than Improved Critical for some weapons (those with high multipliers) and worse for others (those with high threat ranges). But it does keep high threat-range weapons balanced with high-multiplier weapons (which d20 Modern's "flat +1 to threat range" version fails to do), and it would probably make Andy Collins happy.
But, personally, I don't think making the man behind such brilliant design decisions as weapon familiarity, the unnecessary power boost to dwarves, or the entire damn
Epic Level Handbook happy is worth anyone's time.