Scratch

i think pokemon should have 3 types. it would be much better. examples
(some of these are just double types):

ryhorn, rhydon, and rhyperior: steel rock ground
tyranitar: rock dark dragon
torchic: fire flying
combusken and blaziken: fire flying fighting
shroomish: grass poison
brelloom: grass poison fighting
sableye: dark ghost rock
camerupt: fire rock ground
grumpig: fighting phycic
trapinch: ground bug
vibrava: bug flying
flygon: bug flying dragon
torkoal: rock fire
zangoose: ice fighting
seviper: poison dark
lunatone: dark rock phycic
solrock: fire rock phycic
baltoy and claydol: phycic ghost
duskull, dusclops and dsuknoir: dark ghost
luvdisc: water phycic
shelgon: dragon steel
torterra: grass ground rock
empoleon: steel water ice
luxio and luxray: electric dark
ampbibom: fighting
gabite and garchomp: ground dragon fighting
bonsly: grass rock
drapion: poison dark bug
weavile: dark ice fighting
gliscor: ground dark flying

yeah its a long list. post your own ideas and discuss this idea