But importing your MEW into Metamask doesn't guarantee that another person who already "know" your PK to access your wallet, so for me, sending all of my MEW balances to Metamask is still a better option.
Why would anyone give away their private key to someone else ?? Couldn't understand.
If you say that someone got your Private Keys then you will not be having much time to transfer your coins to Metamask Just abandon the wallet if someone has your Private Keys.
But if you still insist on transferring it to MetaMask, just send them like a normal transaction to your Metamask Wallet
It happened to me when I just get into crypto, at that time I don't know if the site was eventually hacked/phished by someone. And when I input my PK, you know how the story ends
So that's why I'm standing for #teamMetamask, it's simpler and only you know the password to access it