Myetherwallet cant take some or all coins because they are not made to be store on ethereum wallet/platform, so it might demand getting more wallets like the NEM wallet for TKY etc, Nano wallets, Neon wallet, blockchain etc. we hope more wallets will be added base on the projects and developments. Most of the recent wallets seem to be made to be market strategies for the coin and also to create platform for the projects form of operation. One might need more than Myetherwallet to store his coin