Scum an issue, loads of them go via Stratford and surely going to be the case with the Scammers ongoing. Millwall not far away but should mostly be South of the river, Orient shouldn't be enough attendees to impact too much.
Current situation:
Fixtures are scheduled so that Woolwich and us are never at home on the same day, or weekend. If we're home, they're away, and vice versa. At the same time, whenever WH are at home, so are we, and whenever they are away, so are we. The implication being that the potential transport clash points between Arse and WH fans are worse than between us and WH.
So that's us and WH in sync, us and Woolwich alternating, Woolwich and WH alternating. I believe WH and Millwall also alternate, but as they're non-PL it's not an issue.
If we were to groundshare with WH:
Obviously we would have to alternate with WH. Therefore Woolwich's fixtures have to be in sync with either ours or WH's. The Met would be pretty unhappy with either situation, and I'm not sure which they'd see as the lesser evil, or if either would be acceptable to them. But they would certainly have a massive say in whether this arrangement would be possible.
All of this is based on the fixtures as they are scheduled at the start of the season, ignoring the fact that on any given weekend it's highly unlikely that all 3 of us, Arse and WH will be playing on the Saturday. If the groundshare arrangement was to happen, I think it would require matches to be scheduled on the Sunday right from the start, rather than when Sky or the Europa League force them to change. So the arrangement could be for example: WH play at home on Saturday, we play away on Saturday, Arse play at home on Sunday. Or Arse play at home on Saturday, WH play away on Saturday, we play at home on Sunday. With Monday and Friday night fixtures possible too, it could definitely work (although last day of the season when all matches have to be played simultaneously could be a problem). However,
it would piss off Sky/BT! They would have to make some decisions on televised fixtures for the entire season in June/July, right when the fixture schedule is put together. That's completely at odds with the way they currently do things, where televised fixtures are chosen only 4-8 weeks in advance, based on which fixtures they think will be most exciting at that point in the season.
So to sum up, if the groundshare were to go ahead, it would need a major concession from either Sky/BT or the Met Police. It wouldn't be easy.