When using Phrases the B00 command automatically reverses the playback of the phrase (great fun), but now reversing samples can only be done within the Phrase.
How about we make B00 in the Volume Column always reverse samples, even when used with phrases. This way you could reverse the Samples and reverse the Phrase at the same time when using B00 in the Vol and the FX Command.
Better way would be to maybe have B03 as an option to reverse samples even when applied to phrases, this way the Vol Column stays free to have actual Vol values and you could run B00 and B03 together in two FX Columns to achieve the same thing.