Chivalry was pretty fun to just jump into and play around for 30 minutes, but longer than that and it got old and repetitive. The game modes were pretty fun, but the maps were awful and not enough maps (massive choke points everywhere). The other thing I didn't like about melee was that your swings were always the same pattern, right to left, left to right. You could control an overhead or stab, but the normal attack was always right to left, then left to right etc.
WotR was complete garbage (didn't buy it, only played the free beta). Way too lame with the QTE to kill (or save) someone. The "feedback" when you swung your weapon was garbage. There seemed like there was no difference or delay between swings if you swung and hit someone, swung and missed, or swung and were blocked. You could recover in the same amount of time no matter what happened. Also it was hard to tell when you actually hit someone (aside from some numbers popping up above their head, which was fucking dumb too).
I played in the Warband MP beta and it was fucking awesome from day one. There's been lots of ups and downs with native MP, but it was loads of fun for a long time. After I burned out on that I started playing crpg MP. All the while since Warband was released I was playing native single player, and dozens of mods for it (even basic ones like battle sizer, TweakMB, etc). Warband is by far the best medieval game I've ever played, and c-rpg took it to the next level with "balance" (trollface) and implementing better game play mechanics. If it wasn't for a horribly difficult (both perceived and reality) cliff to climb as a new player, c-rpg would have a lot more people playing it over the years.
I'm looking forward to KC: Deliverance, or Life is Feudal (even though I likely won't have time to play them for a couple years).