I beat Kirb last night and it was amazing. The pacing was just right. The music was fantastic! I loved all the call-backs to earlier games in the series, from entirely recreated levels (Floria from Super Star!!) to remixed music and boss fights. The final boss even had attacks that referenced the final bosses from Super Star and Crystal Shards.

The only thing missing for me was a remix of the timeless final boss music from super star - Marx's Theme