If you plan to keep your BS snorlaxes maxed you may have trouble keeping up with the candy cost if you take on another one. I had to cut one off, there was just no way.
I don't think Zen/EQ will ever be on equal ground with l/BS. Maybe with gen 2? I know very little about the future pokes weaknesses. BS is just so damn good on defense, I don't see it happening...
Exeggutor is a wild card, gets a lot of hate now that bugs were buffed. I'm still a fan:) Only with the psychic charge move though.