Does anyone else think that having elena as a vampire is like having a kinder katherine?

Not really, no.

i don't know maybe

Being a vampire means nothing its just a time being character

Yes, Katherine was once innocent, as Elena is now.
She had to turn cold because of Klaus,hopefully Elena does not do the same thing.
Katherine and Elena are very similar in personalities and Stefan knows that.

well she kinda is but elena does not kill much people than kathrine.