It would be very useful to import a mnemonic with password from DashCore. Now there is no such possibility. Since the word length is different and does not support additional password entry
Of course it will be awesome but there are other important things to do.
Those wallets are totally of different structure so... :)
Where can I find mobile wallet sources? I am a developer myself and I think I can write a converter
Please check this link out for the further informations into importing standard mnemonics into the HD dashcore wallet.