Actually, if you read the Current data sheet for 2383/3383 you will note that it no longer uses REMJET as removing it took an extra wash step, and with one of the two major labs (at the time) being in LA where Water is hard to get dropping the wash step was needed. (The other lab since closed was north of Montreal)
You would have to do some testing to see if C-41 would cut it as the process is the very similar ECP2. Note if you read the Kodak technical details that applicateing the sound track was also phased out - again to skip a wash step. That only required every theatre to change out the sound reader in every projector.
http://www.motion.kodak.com/motion/...ns_acrobat_en_motion_products_lab_h12383t.pdf
There is an ANti-halo dye in the emulsion of 2383/3383 that is decolorized in processing, the trick would be if the dye would also decolorize in your C-41 process, the data sheet hints that part of that magic happens in the bleach step, and the bleach steps of teh small c-41 kits are not always the same as ECP2 or ECN2.
The Mask is NOT a LAYER, it is part of the system that allows correct colour reproduction. Ron the PE has explained this many times. Basically there is a coupler which absorbs yellow in a layer where the desired dye adsorbs yellow as well as the colour it is supposed to adsorb. another layer has a red dye where the main colour layer also adsorbs red. n both cases the Yellow and red mars are destroyed in proportion to the creation of the image dye. thus thorough the image, the red and yellow adsorption are strictly based on the nature of the desired image. The orange mask thus is easily dialled out when scanning. if it was not there there would be strange colour casts that could not be corrected easily. it at all.
There are many properties that Poly film has that need to be considered, it takes on a core set for example, thus the complaints about "curly Film" It will not yield if there is a break, which caused expensive damage at Illford when they were using it and had a mishap. It cannot be spliced with film cement, which is a problem with some motion picture use. The light pipe effect can happen with any level of lighting.