This was finally being addressed with things like rolling BR/gauntlet not rolling into the same however this newest CA resistance being released (with a new set of play this new mode challenges) it shows EA/Dice do not understand why we do not like this so let me spell it out as clear as I can. WE DO NOT WANT TO BE FORCED TO PLAY A CERTAIN WAY TO EARN UNLOCKS, IF YOU HAVE TO FORCE US TO PLAY A NEW MODE RATHER THAN US WANTING TO PLAY IT, THAT'S ON YOU AND THE MODE HAS PROBLEMS MORE THAN LIKELY. As stated above, the band aid re rolls etc are just that a band aid to a poor choice you made in development, please just implement better challenges to start with like the suggestions above. I love the franchise and even stuck it out through 2042 but this has to change, most people probably log in look at what challenges they have to do see that they are being told to go do this or that with zero flexibility and instantly get annoyed even before playing a single round. Then guess what, those things that they might let slide (bouncing off pebbles straight into a HALO jump etc etc) are not being let slide....
I appreciate things can take time to implement so please at the very least uncap re rolls (why is this even a thing)