well depends what you mean by mispronounce for desis .v and w are mixed up teh d sound is very differrent then a daal sound the 'th' sound is also done differently
Desi accents are not so messed up , they are thick accents at least they can emit similar sound associated to a letter.
At least they do not pronounce P as B , they park on the parking space do not bark there.
a Veil is veil or weil not well when they say it.