Bourgeois's later symphonies should not be ignored. They may not be "great", but they are certainly enjoyable listening, and would be great for an amateur orchestra looking for something original to play. I recommend #90 and #101 as starting points.
I just heard his 'Cotswold Symphony' online and found it most enjoyable. What a shame that it is not on CD.
It is a great loss to us that his works aren't better known. They are lovely, powerful, melodic, epic works that aren't well represented due to his productivity. I have probably heard half his output and found it all enjoyable and most of it substantial and worthy of posterity. :(