Like last time, I'm only suggesting course ideas, and I'm probably not going to actually do them:
Tranz/Tek-no
-Trance and techno styled songs
V35 (Hvy)
Votum Stellarum (Hvy)
Know Your Xenemy (Chl)
Ichirin no Hana ~Huge Hollow Mix~ (Chl)
Japanesque
-Songs with Japanese lyrics
Namida Girl (Hvy)
LOVE TROPICANA DELUXE (Hvy)
Ichirin no Hana ~Huge Hollow Mix~ (Hvy)
Mahoro de MAX 300 (Hvy)
Angels
-Songs with female singers
Paranoia Survivor Min (Hvy)
MATA HARI (Spy Mix) (Hvy)
Metal Queen (Chl)
Kiss Kiss (Hvy)
Oldies Mix
-Old mixed or non-mixed songs
DOCTOR PRESSURE (Hvy)
Metal Queen (Hvy)
Harder Better Faster Stronger (Hvy)
September (Hvy)
The Movies
-Videos added to each simfile
LOVE TROPICANA DELUXE (Hvy)
Blow Me Away (Chl)
Kiss Kiss (Hvy)
Know Your Xenemy (Chl)
Bemani Music
-Songs that debuted in a Bemani game other than DDR
V35 (Hvy)
September (Hvy)
Votum Stellarum (Hvy)
Bad Boy Bass!! (dj Remo-con MIX) (Hvy)
Well, I didn't know I'd come up with this many ideas.
I tried to get as many songs involved as possible. Hopefully, these help with the development of the courses.