The park itself isn't busy in any regard...it's a ghost town most days of the year to be honest. It's not like it gets packed full of people like Toronto parks do where you can barely find a blanket sized patch of grass to sit down on. Overall, there's plenty of greenspace downtown or within a 10-15 minute walk from the main core. Victoria Park obviously, but also Sandhills Park, Kaufman Park, Cherry Park, Civic Centre Park, Vogelsang Green, Market Green, Woodside Park, public schools with greenspace, playgrounds and probably a few more things I'm forgetting. The Station Park development will also have a semi-public area and I'm sure future developments that go up around this area will also include recreational areas.
Jubilee Drive is useful because it acts as a connector for Park Street and Victoria Street traffic and can funnel cars onto Courtland, King, Charles, Queen etc, but it's not a big enough street that it causes serious traffic issues in the park itself. If you closed Jubilee, then you just force cars to go down roads like West Ave/Highland/Queen or to Victoria and then down to Charles or King. That just worsens traffic in other areas (particularly due to all of the intersections one needs to stop at), meaning you just move the traffic elsewhere which would continue to piss off the people who hate cars and they'd continue to yell at the clouds. I think the best thing that could be done for Victoria Park is to appropriate that junkyard full of derelict tractor trailers - perhaps even those two little homes - and expand it there, which would connect it to the Iron Horse Trail. If Victoria Street continues to densify eastward, perhaps the city/region can find another area to build up a new park, such as that vacant plot of land on Margaret Ave which is a fairly good size and could house a playground and other facilities no problem. It doesn't seem like anything is getting developed there despite the proposals.
Jubilee Drive is useful because it acts as a connector for Park Street and Victoria Street traffic and can funnel cars onto Courtland, King, Charles, Queen etc, but it's not a big enough street that it causes serious traffic issues in the park itself. If you closed Jubilee, then you just force cars to go down roads like West Ave/Highland/Queen or to Victoria and then down to Charles or King. That just worsens traffic in other areas (particularly due to all of the intersections one needs to stop at), meaning you just move the traffic elsewhere which would continue to piss off the people who hate cars and they'd continue to yell at the clouds. I think the best thing that could be done for Victoria Park is to appropriate that junkyard full of derelict tractor trailers - perhaps even those two little homes - and expand it there, which would connect it to the Iron Horse Trail. If Victoria Street continues to densify eastward, perhaps the city/region can find another area to build up a new park, such as that vacant plot of land on Margaret Ave which is a fairly good size and could house a playground and other facilities no problem. It doesn't seem like anything is getting developed there despite the proposals.

