I wonder why more maskless films haven't appeared. I certainly would have use for them (and not only because of that technology that starts with an 's' but for wholly analogue purposes as well). There could be mask-emulating filters for those who want to do ra4 from them (and of course it'd also be extremely easy to generate such a mask). Anyway, just surprised that Rollei are the only ones in this game.
There is a reason for the mask. Not only for RA4 (Remember, scanners been here with us from before C41 was made)