I think it is still extremely rare for a Reach aircraft to transmit 'REACH'
30/04/2008 REACH 01 AE021A
24/06/2006 REACH 31 ADFDDD
03/12/2006 REACH 31 AE1295
04/01/2007 REACH 31 AE1295
09/01/2007 REACH 31 AE0223
10/01/2007 REACH 31 AE1295
22/01/2007 REACH 31 AE1295
13/02/2007 REACH 31 AE1295
18/02/2007 REACH 31 AE1295
01/03/2007 REACH 31 AE1295
03/03/2007 REACH 31 AE1295
19/03/2007 REACH 31 AE1295
23/03/2007 REACH 31 AE1295
27/03/2007 REACH 31 AE1295
27/01/2007 REACH 33 AE12C4
30/01/2007 REACH 33 AE12C4
31/01/2007 REACH 33 AE12C4
01/02/2007 REACH 33 AE12C4
07/02/2007 REACH 33 AE12C4
02/05/2007 REACH 70 AE14F5
09/12/2007 REACH01 AE0236
12/01/2009 REACH022 AE0314
06/03/2008 REACH066 AE0224
14/05/2006 REACH104 ADFEA3
19/01/2009 REACH109 AE030C
26/08/2008 REACH113 AE0320
18/12/2007 REACH116 ADFE70
02/04/2008 REACH123 AE02DC
19/02/2008 REACH137 AE1896
11/06/2008 REACH137 AE02F5
26/06/2007 REACH138 AE0234
16/03/2008 REACH149 AE05D7
20/04/2008 REACH164 AE1535
22/04/2008 REACH164 AE1535
27/07/2008 REACH168 AE0611
09/11/2007 REACH169 AE0225
24/11/2008 REACH169 ADFE87
15/07/2006 REACH172 AE0677
15/01/2008 REACH178 AE031A
18/06/2007 REACH18 520276
26/07/2006 REACH190 AE021D
30/09/2007 REACH192 AE05D1
27/03/2008 REACH200 ADFEAE
17/07/2006 REACH21 AE07A7
15/04/2008 REACH211 AE0228
09/08/2006 REACH212 AE0209
11/10/2007 REACH212 ADFDAF
12/11/2008 REACH225 AE12D0
16/03/2008 REACH228 AE05DB
24/12/2006 REACH234 AE0228
16/01/2007 REACH234 AE0228
21/02/2007 REACH234 ADFEA6
03/10/2007 REACH241 AE0603
07/06/2008 REACH245 AE1535
07/09/2006 REACH250 AE061D
31/05/2006 REACH251 AE021E
06/06/2006 REACH253 AE0228
27/09/2006 REACH253 ADFDDE
17/07/2007 REACH255 AE061C
18/07/2007 REACH255 AE061C
11/09/2006 REACH256 AE05C0
03/04/2008 REACH257 AE0313
27/09/2007 REACH258 AE0605
17/07/2008 REACH258 ADFDDC
21/11/2007 REACH263 AE0224
30/04/2007 REACH265 AE0218
12/08/2007 REACH265 AE031A
18/02/2007 REACH275 AE0223
24/08/2006 REACH281 ADFE80
25/08/2006 REACH281 ADFE80
25/08/2008 REACH296 AA42B5
12/01/2007 REACH314 AE05D1
06/04/2008 REACH319 AE02DD
23/09/2006 REACH340 AE05D7
16/12/2006 REACH340 AE05D7
17/03/2008 REACH343 ADFE6F
18/03/2008 REACH343 ADFE6F
23/09/2006 REACH346 AE05DB
02/06/2006 REACH347 AE02EF
08/11/2006 REACH348 AE01DD
16/03/2008 REACH349 AE0220
26/09/2006 REACH353 ADFDDF
05/07/2006 REACH360 AE02DB
24/09/2006 REACH360 AE0305
23/06/2006 REACH369 ADFDB7
24/06/2006 REACH369 ADFDB7
01/03/2008 REACH370 AE022F
17/02/2008 REACH372 AE0131
15/06/2006 REACH391 ADFDB6
17/02/2009 REACH397 ADFDB9
08/03/2008 REACH398 AE0224
30/03/2006 REACH41 AE12BB
03/04/2006 REACH41 AE12BB
04/04/2006 REACH41 AE12BB
05/04/2006 REACH41 AE12BB
24/05/2006 REACH41 AE1284
24/04/2007 REACH432 AE125F
28/04/2007 REACH432 AE125F
04/05/2006 REACH455 ADFDC2
05/05/2006 REACH455 ADFDC2
28/03/2007 REACH479 AE0188
19/06/2006 REACH547 ADFE85
10/05/2006 REACH557 AE0600
13/09/2007 REACH573 AE0537
21/06/2008 REACH598 AE031A
26/09/2006 REACH632 ADFDDD
04/02/2009 REACH635 AE0218
12/08/2008 REACH641 ADFDBB
09/10/2007 REACH652 ADFDAF
29/08/2006 REACH655 AE0234
05/09/2006 REACH655 AE0234
13/09/2006 REACH655 AE0234
15/10/2006 REACH655 AE0234
28/02/2008 REACH657 AE130A
07/04/2008 REACH674 AE0228
21/09/2007 REACH684 AE0216
24/09/2007 REACH684 AE0216
28/03/2007 REACH710 AE01DC
06/08/2007 REACH751 AA2DC9
30/04/2007 REACH754 A42DD1
15/09/2007 REACH755 A42DD1
25/10/2007 REACH756 A82335
06/05/2007 REACH763 A85F41
09/05/2007 REACH763 A85F41
28/07/2006 REACH779 AE021D
13/09/2007 REACH781 A95DBD
14/09/2007 REACH781 A95DBD
16/01/2007 REACH782 A42DD1
20/10/2006 REACH80 AE083B
27/09/2007 REACH810 A42DD1
04/01/2008 REACH812 A15B05
07/02/2009 REACH828 A2A692
30/04/2008 REACH857 AE0130
09/11/2007 REACH860 AE0326
10/11/2007 REACH860 AE0326
22/08/2007 REACH868 AE1535
14/10/2007 REACH876 ADFE70
12/05/2008 REACH907 AE061D
19/07/2007 REACH915 AE0544
18/10/2008 REACH924 AE0307
03/09/2007 REACH931 AE05FE
01/10/2007 REACH932 AE021B
12/11/2008 REACH935 AE12E6
08/08/2007 REACH941 AE1161
08/11/2007 REACH941 AE1530
12/01/2009 REACH948 AE0224
21/01/2009 REACH948 AE0224
23/09/2008 REACH959 AE021F
15/01/2009 REACH962 ADFE84
21/08/2008 REACH963 AE0308
08/01/2009 REACH971 AE0216
16/07/2006 REACH980 AE021D
29/10/2006 REACH981 AE0130
04/11/2006 REACH981 AE0130
29/12/2007 REACH981 AE0622
22/03/2006 REACH982 AE020D
23/03/2006 REACH982 AE020D
04/12/2007 REACH998 ADFDB9
15/06/2007 REACH999 AE0208
so I would not make any changes to the logos.
I agree that changing the logos isn't the solution - having RB/SBS interpret the callsign more intelligently is.