Deserve evolution's:

jynx - more sexy please
pinsir - gold/silver beta masked pinsir
weezing - sticky cancer looking mf
ledian - power ranger themed
plusle & minun - tandemaus style single pokemon with gorochu looks
ariados - dark bug
sunflora - really tall
sableye - gem armor
octillery - battlehsip shark
mawile - pure scary, no cute left
altaria - more beauty less cute
unown - collect them all to merge into ophanim
chatot - sound type please
aromatise - witch doctor
togedemaru - metal spike hedgehog would look cool
delibird - snorlax sized delibird, loses flying for fairy type
heatmor - after defeating x amount of durant
meowstic - becomes genderless keeping with mental disorders

Deserve split evolutions:

dragonair - keep snake/wing motif
rhydon - rhyperior sucks, plz fix
goldeen - seaqueen
slugma - lavalamp shell fire/steel typing
psyduck - gets psychic typing
flaafy - stays looking like a sheep
shelgon - land based cant fly, gains dark second type
skorupi - retains typing, keeps looking like scorpion

Deserves prevo:

doduo
tropius
delibird
lapras
audino
sawk & throh - common prevo
oricorio

i'd honestly put money on none of the above happening for the next 2 gens