-Can be compiled on any platform, including Windows, MacOS, Linux, Android, iOS, newer game consoles, etc. No other cryptocurrency can do this.
-Staking mobile wallets with transferable wallet.dat
-Only other coin besides BTC to require only 1 confirmation on Poloniex.
-Unlike Bitcoin, Vanillacoin's global transaction pool is highly synchronized, which makes malicious block reorganizations nearly impossible.
-Very active dev, most talented I've seen in the altcoin space.
I know the bitcoinj wallet has an online mempool it references from blockexplorers to find unspent outputs.. is it that?