Back to trains.................I'll try to ignore the persistent lesbophobia on here.
Actually, you could argue that current trains are more friendly towards dogs, than kids. Dogs, after all, can go into the main carriage area, and underneath seats etc. Whereas I've seen all too many mothers with prams etc banished to the smelly carriage end near the loo because (unless they trek to the luggage area on Coach D in CrossCountry, west coast line anyway) there is nowhere to put a folded buggy, and certainly nowhere for an unfolded one.
If we were designing the trains, what would we want? I suggest a child-friendly coach/area, with room for buggies, then also a child-free bit as well for us grumpy ole lesbians! Somewhere mothers on long journeys could comfortably breastfeed without sitting in the loo? What do mums do at the moment, just go for it despite whoever is in the seat next to them? Even mums who used to book a seat at a table so they could place a carry-cot on the table have an issue now that in a bid to 'increase' seats, CrossCountry took out almost all the tables compared to what Virgin had when they used to run the lines.
Like the loos in workplaces issue, we know what the real issue is, it is public spaces designed by men for men, and even a few grumpy lesbians who don't like kids shouldn't be used to disguise that fact!