Honestly, the heart of the steroid era was a fun game to watch. In 1998 you had juiced up freakhows hitting 70 homers and putting up crazy power numbers, but you also had about 1000 more total stolen bases than we currently have today, with 10 different guys stealing 40+ bags. There was a huge range of player types, ranging from Mark McGwire to Tony Gwynn and Eric Young, and everything in between.
You had the same variety in pitching: a few elite arms and gaudy K/9 rates of 10-12 (Big Unit, Schilling, Clemens etc...) but there were 10 or 20 guys who put up league average 175-225 IP seasons with fewer than 6 K/9. And complete games were still a thing.
I feel like we have a narrower distribution of player types now, as we've drifted towards most hitters being three true outcome power hitters, and very few pitchers trying to induce weak contact early in counts.
I just want to see a wider variety of skill sets doing a wider variety of things.