You do remember passengers don't you?
People will have to change trains. Non-issue. Frankston, Sandirngham, Burnley Direct, Newport and some other northern group trains don't go via the loop. Those passengers? They make do. They interchange where it suits.
If the loop is permo one direction it doesn't matter. If you work near parliament, in the morning you get a longer commute, and in the afternoon you get a shorter one. Currently you either get two short or two long commutes, so it spreads the commute time amongst the passengers.
Additionally, unless you live in Hawthorn, an extra 5mins on the train isn't a big deal. First on means at least you'll get a seat.
what planet do you actually live on.
Change platforms via tunnels in peak IS A BIG ISSUE.
"They make do" - of course - there is no other way with the smeg platform designs.
As well a crushing pax into trains, you're also happy to crush load those tunnels.
Tell that to a Sandringham pax who must go to Parliament.
Get crushed in the Richmond tunnel or take an extra 10-15 minutes plus FSS tunnel.
How about you actually read what I wrote about platforms 7/8 at Richmond. Specifically designed to make a seamless change, and the only one.
"Currently you either get two short or two long commutes, so ..."
NO you don't.
Burnley going to FSS, you get short
commute AM and PM
Burnley going to Parliament, you get short
commute AM and PM.
Rest of the loop, still way quicker via loop AM and PM.
Daily pax do what works best for them everyday.
Putting everybody into a mindless time wasting one-way herd that only benefits a simplistic schedule written by unimaginative planners is definitely NOT customer friendly.
There actually is a small window of opportunity with MM1.
Although change trains at Caulfield will forced upon many commuters, a seamless platform cross-over like Richmond 7/8 would make life a lot simpler for the BUSIEST corridor in Melbourne. They have to do it now if brave enough at the Caulfield tunnel.