Colon, Dickey, Garcia, Phillips were veterans on one year deals who cost no significant assets to acquire. That's the story there.
Is liquidity not an asset? Colon/Dickey/Garcia make up ~30% of the team's payroll. That's neither here nor there, though.
Kemp is still a bit of a mystery to me. I think perhaps he might have been a buy low play (the Braves were paid to take him), though it has always been a peculiar one to me. I guess it was an attempt to open an early window if things went just right. Not sure what the opportunity cost actually has been, but its not insignificant.
Ironically, Kemp is the guy who made the most sense to me. He's a huge name on a team that was lacking brand and he smacks home runs (like it or not, the thing that casual fans relate to the most). Also wanted to play for Atlanta.