Not really its just an extension of functionality in order to build a tool of diversity. IMO BitShares should strive to become such a smart wallet particularly incorporating coins with unique and important features: BTC, XRP, and perhaps DRK or Monero. Rather than competing with successful coins assimilate them buy building a BitShares P2P exchange for each of them. In this way users can stay within the BitShares ecosystem.
But as you allude too one wallet should not keep everything! People should run at least a set of hot and cold wallets, perhaps more, to diversify the security risks e.g. different passwords/hardware etc.