you need stls and 3's grab J Harden...good on 3's and a monster on steals...is good/decent across the board and most definitely will contend for 6th man of the year this year.
If he's not available, i would snag M. Webster...starting SG and huge on 3's and good in Reb.
Like you said, you got nothing on blocks....and i do think R lopez is weak choice.
Otherwise, nice team. I would be surprised if someone traded you Deron for Rondo...Great for you, but not a good trade for the team giving up Deron. If your league is savvy in the least, no team would make that trade and help your team out huge in the process...just poor GM'ing....but that said, if you can do it, i would.