Improve their movepool, I don't think you can.
New move ideas are welcome!
>>33306625
Acces to bestow and razor wind
all eeveelutions now share their movepool.
ie leafeon can use flare blits, glaceon can use scald etc.
>>33306648
>fire blast espeon
Earth power Glaceon
Stone edge Leafeon
With these moves they cover most of their weaknesses.
Just give them megas.