The PA28 handles now the same as it did half a century ago! Although it's less likely to feature the EFIS displays found on newer types. In the UK the most significant change has been the proliferation of airspace restrictions of one sort or another. Many pilots now use tablets or smart phones for nav purposes, although many still print out a copy of the planned route as a back-up. SkyDemon is a popular tool for both planning and operating flights.
Electronic conspicuity (EC) is a recent development, but might be a mixed blessing for VFR pilots. Checking a cockpit traffic display should not be allowed to detract from the primary task of looking out of the window for see-and-avoid. Currently there is plenty of VFR traffic that will not show on EC displays.