Anything that replaces the current ATF will be more competent .
Sometimes better the devil you know.
Just to be a contrarian

JMHO. Whats really needed is:
1 Remove all "rule" making authority from every agency/department. If it is necessary to be a rule, then it is necessary enough to be a law, and needs to go through our elected representatives. OH, and no "omnibus" rules package, let each stand or fail on its own merit. As an added bonus it would give them lazy SOBs in congress something to do besides hold do nothing hearings, investigations and flying off on "fact finding junkets". AKA taxpayer funded vacations.
2 Enforce agencies to stay in their own lain. I.E. Guns are not a disease. The CDC should not be doing any study on "gun violence". Anyone straying over the line, fired, lose all benefits and entitlement, like retirement and lifetime health care etc.
3 disband 90+% of the SWAT Teams. The Dept of hugs and kisses has no need for a place for the tactacool kids to go and play. If on the off chance the DHK needs a swat team, go through the DOJ and they can be lent one.
4 Every month every Gov. employee is required, on their own time an expense, to take a 8hr class reminding them that they are Servants of the people not Lord and Master!
5 don't like it? Go get a real job in the dreaded private sector.
FYI. From a retired public sector employee.