There are no trade offs that I'm aware of.
And 148 is OC AND CC.
They were only 3 or so votes short of passing 148 last time. If current law gets struck down, why would pro-gun politicians make huge concessions? You don't make HUGE concessions when you are on the side with winning momentum.
I think we will see something that looks a lot like 148 with only some minor changes to it.