could you make some recipes use angel and bob materials if those mods are active?
for example, one of the floors is nitinol arrow grate, that one could use nitinol plates if bob is active
also, circuit floor could use something like basic electronic card, and the alien floor could use circuit floor plus advanced processing unit (the last bob circuit tier), or even some alien artefacts if those options are enabled, but that last thing may be too much
