If R* lowered the cash reward from most missions, it's clear they want people to buy cash cards. If you think about it, it becomes blatantly obvious that there is a high possibility of them reseting the LSC glitchers (which is around 30% of players, imo). It really looks like the next step in their plan is to remove all of this money that has flooded into the game from the LSC glitch. I mean, how can they not? Such a large portion of the player base are now rich enough to never have to earn or buy money again. It would be utterly retarded if R* did not take action.
Currently glitchers are barely, if at all affected by the low money payouts from missions because they have MILLS (studies show the average glitcher has 20M, source: my head) and I really doubt R* would let them slip away into the many months to come, with their huge cash stacks, never buying cash cards, being the first people to buy new expensive things from DLC etc.
In conclusion, I believe there is a high possibility of glitchers getting banned and/or reset. And if you're saying R* can't track who did the glitch or not, well just look at your profile on the social club. They already can see your mills made from car sales.