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As I said, you don't have to worry about drivers going in opposite directions in filtered areas if you do it right. If you end up with one street that's the principal way in, you can create a couple of passing spaces. Either way it'll work. The reason why drivers get into fisticuffs that eventually lead to one-way streets being adopted is because they're in a hurry to get somewhere while treating the street or area as a way to that somewhere else, not as a destination. If it's just people going a couple of dozen metres into a filtered cell, all that urgency dissipates and people will happily reverse a bit in the rare cases when conflict will occur.
Share away, the more views the better.
I think the majority are existing one way streets. Those roads are a bit narrower than average but for most streets in the area you couldn't have two cars passing each other without a gap in the parked cars. I'm not sure how congested the parking is round there, streetview doesn't seem to show it as any worse than other places nearby so I'm not sure of the basis of keeping them in.