So, because I apparently have way too much time on my hands, I ran the "first season with the Pats" numbers on all the WRs acquired by BB (draft picks and veterans)who made the regular season roster. In order then, listed by number of receptions:
2007 - 112/1175/8 TDs - Welker (48/561/1, 3yrs) (avgs, pre-Pats career) - UDFA, SD 2004
2007 -- 98/1493/23 TDs - Moss (77/1208/11, 9yrs) - 1st RD, MIN 1998
2006 -- 61/760/4 - Reche Caldwell (19/238/2, 4yrs) - 2nd RD, SDG 2002 (X = no 2nd Pats season)
2001 -- 51/749/4 - David Patten (18/252/1, 4yrs) - UDFA, NYG 1997 (61/824/5 in 2nd Pats season)
2010 -- 48/706/5 - Branch (redux) (50/636/4, 8yrs)
2007 -- 46/697/3 - Stallworth - 47/703/6, 5yrs - 1st RD, NOL 2002 (X)
2002 -- 43/489/2 - Branch (rookie) - - 2nd RD, PATS 2002 (57/803/3, 2nd season w/ Pats)
2006 -- 25/344/3 - Doug Gabriel (25/402/2, 3yrs) - 5th RD, OAK 2003 (X)
2010 -- 24/432/3 - Tate ("redshirt" in 2009) - 3rd RD, PATS 2009 (X)
2005 -- 19/332/3 - Tim Dwight (22/346/2, 7 yrs) - 4th RD, ATL 1998 (X)
2003 -- 16/209/2 - Bethel Johnson (rookie) - 2nd RD, PATS 2003 (10/174/1, 2nd Pats season)
2011 -- 15/276/1 - Ochocinco (75/1078/7, 10yrs) - 2nd RD, CIN 2001 (???)
2001 -- 14/111/1 - Chas Johnson (48/637/3, 7 yrs) - 1st RD, PIT 1994 (X)
2006 -- 13/152/3 - Chad Jackson (rookie) - 2nd RD, PATS 2006 (blew out knee in '06 AFCCG; never recovered)
2002 -- 12/133/2 - Donald Hayes (33/464/2, 4yrs) - 4th RD, CAR 1998 (X)
2006 -- 11/142/1 - Jabar Gaffney (43/502/2, 4yrs) - 2nd RD, HOU 2002 (36/449/5, 2nd Pats season)
2005 --- 9/190/1 - Andre Davis (31/471/4, 3yrs) - 2nd RD, CLE 2002 (X)
2002 --- 9/92/1 -- David Givens (rookie) - 7th RD, PATS 2002 (34/510/6, 2nd Pats season)
2008 --- 8/101/0 - Sam Aiken (4/50/0, 5yrs) - 4th RD, BUF 2003 (20/326/2, 2nd Pats season)
2003 --- 7/106/1 - Dedric Ward (27/306/2, 6yrs) - 3rd RD, NYJ, 1997 (X)
2009 --- 7/67/0 -- Galloway (57/893/6, 14 yrs) - 1st RD, SEA 1995 (X)
2000 --- 5/95/0 -- Chris Calloway (38/540/3, 10 yrs) - 4th RD, PIT 1990 (X)
2000 --- 5/44/0 -- Curtis Jackson (rookie) - UDFA, PATS 2000 (2/16/0, 2nd Pats season)
2001 --- 4/39/0 -- Torrance Small (43/572/4, 8yrs) - 5th RD, NOL 1992 (X)
2001 --- 4/25/0 -- Bert Emmanuel (47/658/4, 7yrs) - 2nd RD, ATL 1994 (X)
2010 --- 3/41/0 -- Taylor Price (rookie) - 3rd RD, PATS 2010 (X, effectively)
2005 --- 3/32/0 -- Bam Childress (rookie) - UDFA, PATS 2005 (2/7/0, 2nd Pats season)
2011 --- 3/30/0 -- Underwood (4/55/0, 2 yrs) 7th RD, JAX 2009 (???)
2001 --- 2/50/0 -- Fred Coleman ("rookie") - 6th RD, BUF 1998 (X, effectively)
2003 --- 2/38/0 -- JJ Stokes (41/517/4, 8 yrs) - 1st RD, SFO 1995 (X)
2000 --- 2/12/0 -- Shockmain Davis (rookie) - UDFA, PATS 2000 (X)
2006 --- 1/9/0 --- Kelvin Kight (0/0/0, 1 yr) - UDFA, GBY 2004 (X)
2007 --- 0/0/0 --- Kelley Washington (18/223/2, 4 yrs) - 3rd RD, CIN 2003 (1/3/0, 2nd Pats season)
2004 --- 0/0/0 --- Kevin Kasper (kr) (6/72/1, 3yrs) - 6th RD, DEN 2001 (X)
2006 --- 0/0/0 --- Jonathan Smith (4/39/1, 2yrs) - 7th RD, BUF 2004 (X)
2004 --- 0/0/0 --- PK Sam (kr, rookie) - 5th RD, PATS 2004 (X)