Ha, if you think Tales of the Valiant is bad, don't look into Level Up A5E; I really enjoy a lot of it, but it provides players with WAY more tools and fun bits n bobs- it basically has 3.5e's Tome of Battle built into it; martial maneuvers (all non-casters get them to some degree) can be incredibly effective and it can be a lot more difficult to challenge the PCs. The classes have a lot of non-combat knacks and such that add more to skills (A5E characters at my table tend to end up with, like, 9 skill proficiencies and some expertise), and the exploration pillar of the game. A5E is great if you're looking for "more" 5e but it sounds like you want to move to something simpler, not more complex (which ToV is a tad).