Totally. Third edition D&D (and its continuation Pathfinder 1e) is amazing for doing the most insane things you can come up with. So many janky combos to be had, with an utterly absurd amount of choices, and characters tend to make more build choices each level than a 5e character does in their entire career. Downside, it's less newbie-friendly because that many options can be overwhelming. But it's perfect for those that tried 5e and found it too shallow.