ok, lets go this way
keep /tt, use:
-switch races
-gta sa single player races
-special made for /tt (that aren't in racemode)
for exapmle
hard, Hydra races better keep in /tt not racemode (hynix, hynix2 etc)
8-Track, Dirt Track, etc - should be in /tt too (as long with other singleplayer races)
loooong 200 cps race also better not put in racemode (coz if we load in racemode, ppl gets bored and leave)
tricky parkour races (PIRATES, it is hard to keep in racemode)