While IO mez resistance will reduce the duration of the status effects, it's hard to get enough status resistance such that they won't be able to overwhelm your protection
Acrobatics will add mag 1 hold protection, which could help, Aid self also provides some Stun protection (or resistance, I don't recall which).
What's your Ancillary Power Pool? If it doesn't clash too much with your character concept, I'd recommend either Arctic Mastery and the getting all the AoE -recharge powers to try slow down how often they use the mezzes or Earth Mastery with the AoE sleep.
The Earth Mastery is really more of a soloing situation though.
If you are getting mezzed and your status protection powers are on, the first thing you can do is use inspirations.
Obviously the best thing to do would be to stack defense. You don't need a lot to be effective. Just get enough that popping purple inspirations gets you close to the soft cap. Why are you against stacking defense?
Probably because it's not his/her character concept.
Actually i'm kind of sick and tired of stacking def, I've made a lot of softcapped crabs/forts/brutes/stalkers/scrappers etc.
I started this tank as a study in how resistance playes, and builds... keeping with that is kind of the goal.
The cake is a lie! The cake is a lie!
I'm still working on my "resistance only" tanker, he's at 44 and so far I've had mixed success. While I can generally survive debuffs, I'm still running into serious issues.
I've been finding that while Carnies and Malta don't bother me with end drain, I mean hey, I'm ele/ they're more than capabable of stunning or holding my tank.
Malta's stacked stuns, and in the case of carnies, it's a wave of holds, especially with two master illusionist bosses.
Either way, I find it's surprisingly often that I end up mezzed, far moreso than with my "tanky brutes" who are admittedly all def based.
I'm curious to know if people have found IO mez resistance to be a sufficiently effective solution, or am I just going to be flat out limited to teams with mez protection buffs?
The other option would be to stack def, which I am refusing to do on this character.
The cake is a lie! The cake is a lie!