Kaczur -- If he had been cut before the original CBA deadline then I'd assume he was gone. I believe Neal's retirement decision caused NE to rethink Kaczur's situation and that he is going to have a chance to compete for Neal's starter slot at RG.
If a CBA agreement is reached during this extension as some have speculated, and Light is re-signed ... I see no significant impact on NE's draft plans for the O-line. I mocked a G/T and C/G to them in the draft for the current draft game, I don't see Castonzo or Solder really carrying must have appeal for Scar and believe he'd rather go into the season with Vollmer and LeVoir at Tackle than draft one of those two too high. And I believe BB would prefer to take advantage of any red chip slider and not target a premier OL when weighed against NE's success with less sexy prospects.
If there's a curve coming along the O-line, consider Mankins to Tackle, especially if Scar has a draft prospect or two in mind to compete for the Guard slots. It's still my preference to leave Vollmer at RT, he's growing into the job and if Kaczur is retained and wins the RG slot that side of the line will gel nicely. Mankins kicked out to LT with Connolly or a rookie starting inside doesn't scare me, but I expect Light to be back and Mankins' situation to be sorted out shortly after a CBA agreement is reached.