18 Months is very long time for developing Wallet because this is about Cardano , Big Name on world of cryptocurrency .
Except developing for new coin ,maybe is okay no problem for 18 Months .
My opinion for this moment , i hope Cardano will growth up after launching this wallet "Daedalus" and once again for this Daedalus in the future i hope not have a bug for transacations,trust , safety or network .