Some townies are exactly the way I want them to be. Is there a way to exclude these townies from dresser rerolls and storyprogression (with the caste system for example) ? I don't like some of my townies switching clothing and getting relationships or moving houses. (I'm sorry if it's obvious, but I'm kinda stupid sometimes)

What do you think about taking control of the situation in your own hands? Disable storyprogression, use the options MK and do with the townspeople all that you like yourself. In fact, the characters do nothing to get married or have children. These are random events generated by the game.

Sorry, could be mistaken but I don't think that "so just don't use any form of story progression" was really the answer the OP had in mind. Take the world that is central to my long-running legacy game, for example. It has over 250 resident sims in over 80 households. Some of these sims, let's say around 10 households, are "mine" and I wish to control their progression by playing them myself. But there is no way I'm going to want to play and control the progression of the other 70+ households, that would take far too long to work through and wouldn't be any fun for me. Watch over and guide them from a distance collectively sure, but I'm not equipped to get into the intimate details of all of their lives while concentrating on my own sims. Plus I have 15 other Traveler mod worlds connected to this one within the same game, there isn't enough time in the world to work through the progression of the thousands of sims who live in them overall.

Perhaps that's an extreme example. But even in one world with let's say 30 or 40 households, not everyone wants to control all of them at once. This is where Rotational Play or some variant of it comes in. An SP caste can be arranged to protect the sims we wish to play when we get around to them from various forms of progression such as moving houses, breaking up and forming relationships, having kids, etc. while the rest of the town can progress on their own in ways that still seem realistic and satisfying to play through.
<a href="http://nraas.wikispaces.com/Story+Progr ... ettings</a>

On a simpler level, if a particular household keeps splitting apart and moving, or changing jobs, etc. where we don't want them to we can set things right again with MC and then lock them down from doing these things using SP's Household or Sim Options. But that's more of a bandage for one household at a time and for many of us a comprehensive approach like the caste based Rotational Play strategy works out to be more of what we require.

Oh sorry, I left out the Dresser question. As I do not use that mod, will have to defer to others for the details but there is a command on the Sim menu available called "Protected." Does this not exempt the protected sims from the mod's automatic re-rolls?

I've had NRaas Dresser for years and usually click on sims to mark them as protected if they're resident sims in my town that can be made active.I just take the time to switch the outfits of resident sims out and I do play rotationally with the NRaas Mod version of story progression tuned for full rotational play much like TS2's rotational play.

I never saw the protected command for dresser, must have missed it. Thanks for the suggestions