I ran 6 benchmarks on my work machine(not the same one as the last set) overnight.
Two with just the BINARY_ADD change, two with the BINARY_SUBSCR change, and two with both.
I'm attaching the output from all my benchmark runs, but here are the highlights
In this table I've flipped the results for running the modified build as the reference, but in the new attachment, slower in the right column means faster, I think :)
|------------------|---------------------------------------|-----------------------------------|
|Build             | Baseline Reference                    | Modified Reference                |
|------------------|--------------------|------------------|--------------------|--------------|
|                  | Faster             | Slower           | Faster             | Slower       |
|------------------|--------------------|------------------|--------------------|--------------|
|BINARY_ADD        | chameleon_v2       | etree_parse      | chameleon_v2       | call_simple  |
|                  | chaos              | nbody            | fannkuch           | nbody        |
|                  | django             | normal_startup   | normal_startup     | pickle_dict  |
|                  | etree_generate     | pickle_dict      | nqueens            | regex_v8     |
|                  | fannkuch           | pickle_list      | regex_compile      |              |
|                  | formatted_logging  | regex_effbot     | spectral_norm      |              |
|                  | go                 |                  | unpickle_list      |              |
|                  | json_load          |                  |                    |              |
|                  | regex_compile      |                  |                    |              |
|                  | simple_logging     |                  |                    |              |
|                  | spectral_norm      |                  |                    |              |
|------------------|--------------------|------------------|--------------------|--------------|
|BINARY_SUBSCR     | chameleon_v2       | call_simple      | 2to3               | etree_parse  |
|                  | chaos              | go               | call_method_slots  | json_dump_v2 |
|                  | etree_generate     | pickle_list      | chaos              | pickle_dict  |
|                  | fannkuch           | telco            | fannkuch           |              |
|                  | fastpickle         |                  | formatted_logging  |              |
|                  | hexiom2            |                  | go                 |              |
|                  | json_load          |                  | hexiom2            |              |
|                  | mako_v2            |                  | mako_v2            |              |
|                  | meteor_contest     |                  | meteor_contest     |              |
|                  | nbody              |                  | nbody              |              |
|                  | regex_v8           |                  | normal_startup     |              |
|                  | spectral_norm      |                  | nqueens            |              |
|                  |                    |                  | pickle_list        |              |
|                  |                    |                  | simple_logging     |              |
|                  |                    |                  | spectral_norm      |              |
|                  |                    |                  | telco              |              |
|------------------|--------------------|------------------|--------------------|--------------|
|BOTH              | chameleon_v2       | call_simple      | chameleon_v2       | fastpickle   |
|                  | chaos              | etree_parse      | choas              | pickle_dict  |
|                  | etree_generate     | pathlib          | etree_generate     | pickle_list  |
|                  | etree_process      | pickle_list      | etree_process      | telco        |
|                  | fannkuch           |                  | fannkuch           |              |
|                  | fastunpickle       |                  | float              |              |
|                  | float              |                  | formatted_logging  |              |
|                  | formatted_logging  |                  | go                 |              |
|                  | hexiom2            |                  | hexiom2            |              |
|                  | nbody              |                  | nbody              |              |
|                  | nqueens            |                  | normal_startup     |              |
|                  | regex_v8           |                  | nqueens            |              |
|                  | spectral_norm      |                  | simple_logging     |              |
|                  | unpickle_list      |                  | spectral_norm      |              |
|------------------|--------------------|------------------|--------------------|--------------|

unpack_sequence is nowhere to be seen and spectral_norm is faster now...