I think so.
I don't see the sponsorship landscape improving for a number of years, the gluttony is over. When a top tier organization like Jack Roush drops a team for lack of sponsorship (one could argue he was looking for an excuse to drop Ragan, though), the situation is reaching a point where some significant changes need to be made to modify the field to more match the money available.
The majority of the top drivers in the sport, lets just say those in the chase, run multiple primary sponsors these days. Lowes perhaps the exception. Start and Park is a leprosy on the sport.
Let's discuss the pro's and con's of a major reset: Limit the guaranteed positions to the top 30, make the total field 36. Eliminate past champion for all but full time participants. If they are still any good, let them race their way into one of the go or go home spots.
That still leaves six go or go home spots for teams trying to break in, compared to the 8 today.
Purse monies for those 7 positions would NOT be redistributed to the other 36 positions, but rather, total purse would be smaller.
Every team qualifying for the go or go home positions will have to prove or "bond" that they have the assets (tires and pit crew) available to run the full race, or else give up their qualifying position to a slower team that does.
These changes would be implemented for both Cup and NW, making the field size of 36 equal across all three top tiers of NASCAR.