Morales is a fine #2 guy. Keep him. His contract is quite reasonable, although the $9.1M in the last year is steep.
Klesko gets you about 45 innings, Pilette gets ripped (splits are terrible) and Browning is a backup OF, at best.
Scott Young in your AAA is better than Browning. Howard Price in AAA is about equivalent to Klesko. And you can probably turn Daryl Moore, at High A, into a AAA pitcher in trade from someone that is better than Pilette (if you need a pitcher now).
moe