Dropbars were originally intended to be ridden on the drops. The standard brake lever position offers the best access, feel, and power when riding in that position. Riding on the hoods is newer. The lever position is a compromise of braking performance for both locations. Shifting with the brake levers is the newest thing. I think Shimano came up with it in the 90s. Shifter development since then has been a huge compromise between access and use of the brakes in 2 positions as well as trying to fit the mechanisms for shifting into the lever. Then hydraulic brakes came a long and they had to re-design again.
There are 0 issues braking on the hoods with modern components. The modern shape showed up around 2008 with Shimano 7900 (later for lower-spec components). Those levers and later are adjustable, so you can move them closer to the bar for easier pull on the hoods. That coupled with quality brakes and blocks/pads makes it pretty easy to lock a tire or loop the bike even on the hoods.
If you want more braking power and feel, I'd suggest the following:
- cleaning & lubing the brake calipers
- making sure the cables are smooth and clean
- replacing the brake pads (blocks) with a quality aftermarket brand
- cleaning the wheel brake track and scuffing it with scotchbrite