I don't know how you can really hate Grandal leading off. His 13.7 BB% was legit. You could argue his power will dip considering the 'roids, but a .360 OBP is a very, very reasonable expectation for him and that's fine for a leadoff hitter. I'm not saying he'll repeat .394, but there's no reason he shouldn't get on base at a really solid clip.
Also, saying we'll start 50 games without a leadoff hitter and catcher is silly. Obviously we'll get a decent backup, considering the circumstances. And Crisp could move up to leadoff those 50 games if we don't get another high OBP guy. He'd be fine there for part of the season.
The main point in critiquing A-GON was that his power has gone down, and Cepedes had a better power year last year and is projected to have a better power year next year, A-Gon is still a very good hitter and would be an elite 2 hitter or i would even flop him and stanton, which is where i would bat him in your lineup, it would be a bit of a peculiar idea but i think that is where he would fit best