Do they not remember how awesome the tactical feats were in complete warrior? Those feats alone gave hundreds of new ideas for characters who might not even be the most fighter-like.
Combat Brute for instance, gave you a reason to use Bull Rush and to take the Cleave feat at a higher level. Elusive target became the bane to power attack abusers, Formation Expert gave you a reason to make a Spartan from that ungodly crappy movie 300 (
).
That book single handedly turned every seemingly useless or unrealistically complicated combat ability or combat feat into something worthwhile enough to specialize in. And yet....this was too much for WoTC.