The warriors trapped box does nothing but help prevent being paralyzed and it is also used by mages. What defense is the trapped box against a mages mana vamp/drain? Nothing. Zippo.
You're completely ignoring the fact that dexers can still prevent mages from going offensive due to normal hits from a dexer. Mana drain is ALSO on weapons now incase you havent noticed (it works slightly different than the spell does (It doesn't return your mana after a short time) Mana Vampire, only works on people Without resist, and it works on other mages too... except that mages actually become crippled completely for having no mana, where Dexers Obviously do not... this point has been made several times, and has been explained a few different ways.
Do mage weapons stop you from getting hit complete? No, they increase your Chance of Dodging incoming (weapon-based) attacks.
What is the trapped box doing to negate the mages curse spell? Zippo.
Trapped boxes are very effective but only a fool would say they replace the Resisting Spells skill.
And replacing the Resisting Spells skill is exactly what I talked about when I asked for a warrior mechanic that works like the mages sc mage wep mechanic.
Paralyze is one thing that cripples dexers (Offensively) doesn't effect their ability to heal, parry, or dodge what-so-ever, and is negated through the use of a trapped box.
So you could get a free resist skill, and still have the ability to get into Animal form (ninjitsu) so you can run away after a dismount... and Also have meditation in your template to stop you from running out of mana as fast? you do realize, if you add a property on a weapon that gives you free resisting spells skill, It wouldn't be limited to a dexer, ANYONE WOULD BE ABLE TO USE IT. which would allow mages to sacrifice (real resist skill) for another.
I could tell you right now, if there were "Tactical Resist" & "Mage Weapon" what is to stop people from putting both mods on the same weapon? I'd gladly give up my 15 dci and/or 25 DI on my -20 bokuto to get resist for free too.. Then I can do what most all dexers do, add ninjitsu to every mage character without dropping med... It would only further create more imbalances.
Also, if anyone were to suggest the removal of Mage Weapons, how many players who prefer to play mages do you think would suggest the removal of Trapped Boxes? Probably all of them.
you know if both of these things were removed a Necro-mage would be far superior (overpowered) because of Evil-omen+paralyze, + E-fields- Regardless if you have show-real resist-skill or this "free" resist as you propose.
it's just not going to work.