As for multi-chain wallets, the thing I fear most isn't slowness, but chaos—at most waiting a couple of minutes for confirmation, but chaos can really get you lost: which chain still has some dust, which address hasn't revoked permissions, whether a cross-chain transfer has actually arrived. Recently, bridges have been hacked again, and oracles are acting up with that "wait for confirmation" consensus—I actually understand it quite well; I’d rather be late than sign something blindly. My simple approach: only one main wallet, treat all other chains as "temporary worker" addresses, revoke permissions after use; don’t try to spread assets all over the network, keep them centralized if possible, too many fragments are like sneaking contraband into DAO proposals—looks lively, but when it’s time to settle, it’s all tug-of-war. Anyway, I now prefer to tinker with fewer chains to keep things simple.