Why don't you just rewrite it in X?
<p><pre><code>              Should I rewrite X in Y?
                 &#x2F;               \
                &#x2F;                 \
               &#x2F;                   \
              |                     |
              |                     |
  Am I doing this just        Is my team full of
  for the features in Y?        experts in Y?
              |                       |
             Yes                  ___&#x2F; \___
               \                 |         |
                \               No        Yes
                 \               |         |__________
                  \              |                    |
                   \         Are there any experts    |
                    \          on my team in Y?       |
                     \           |           |        |
                      \          No          |        |
                       \         |          Yes       |
                        \        |     _____&#x2F;         |
                         \       |     |              |
                          \      |  Did they          |
                           \     |  propose it?       |
                            \    |     |      \       |
                             \   |    Yes      |      |
                              \  |     |       No     |
                             Don&#x27;t rewrite.    |      |
                                 |             |      |
                                 |           Were you going to
                                 |           rewrite it anyway?
                                 |              No       |
                                 |______________|       Yes
                                                         |
                                                          \
                                                           \
                                                            \
                                                             \
                                                              \
                                                               \
                                                                \
                                                                 \
                                                                  \
                                                                   \
                                                                    |
                                                             Think about it.</code></pre>