This game heavily supports "cross-breeds" like mage/wizard or fighter/ranger... so no, definitely STR on a staff/INT on an axe/DEX on a staff etc. etc. is not something that needs 'fixing'... as there ain't anything broken.
Please point out when Dex on a staff would be remotely useful for anyone investing in Scoundrel skills, Marksman skills and magic skills.
With Marksman skills, you need a bow. With Scoundrel skills, you would have an argument of not for the fact that up till level 15, the only offensive skills not explicitly requiring a dagger are Trip and Charm, and it's probably a safe bet that you're going to follow up your trip with a backstab.
Mage archetypes don't even benefit from staves either, staves are only used by casters because the requirements are Int based. Does nobody actually look at the skills?
Hybrids are fun and all, but weapon itemization has problems. This is most evident with staves, because staves are subpar as weapons - can't be upgraded without a rare reagent, can't be enhanced with ores, have no synergy with spell damage, inferior to all other one and two handed weapons of the same level - and as stat sticks.
Before anyone starts howling at me, let's compare two white weapons.
Shillelagh - Level 15, Crushing 63-108, Crit chance 1.5%
Astonishing Air Staff - Level 16, Air 28-69, Crit Chance 1.5%
If anyone actually has an argument that isn't purposely vague, I'd love to hear it
