Nameless One: There have been enough lists on Deckcheck that T8'd that contain Bloodghast that the card has proved playable. Some people don't like it, some people do - it seems a personal choice and the deck has proven success in both variants. Ultimately I believe your SB list and choices will make more difference to your success than choosing to run BG or not.

Personally I didn't like the idea of BG UNTIL I tested it extensively. I found it helped me Games 2 & 3 as you have more threats to survive multiple graveyard hatings. Also casting DR was sometimes easier because you can generate more creatures.

All that said I would personally never cut Ichorid and only run BG in addition to it.