If a second team is needed, perhaps there?s an opportunity for Worcester, LI or even Jersey. Or perhaps all four of us.
As for grounds, I?m not sure the Den is in the right sort of area to host rugby matches. Perhaps Charlton is a better option if looking for alternatives along the railway lines heading out to Kent. They?ve even had a nomadic period in the not too distant past, so might be a kindred spirit.
Of course, there are other grounds in Greater London that have hosted rugby teams in the past. The Stoop (over most of our dead bodies) and dear old (?) Loftus Road.