I’ve always been lukewarm on DRS and its effects on competition in terms of defence, but making the cars draggier probably puts even more of an emphasis on better aero performance, and imo would likely strengthen RB, if anything, since they have Newey on their staff. You’d also be placing a lot more emphasis on engine design and fabrication, since cars with lower RPM power bands would be able to gain and hold early leads (this, of course, subject to tyre degradation and design).