Lots of people don't use 'commuter trains' to get to work! But a crèche is costly, so worth doing a survey to see if people need it, and they would have to pay for it (our group HQ has one but I don't work there, not that I have kids anyway).
Looking round my office where we all 'hot desk', the thing I would like is a footrest! I cross my legs too much and prefer a footrest to help remind me not to do it, but as we hotdesk I can't have one.
I think hot desking is a H&S nightmare, not to mention a social nightmare as you never see the same person two days in a row so never get to build any work relationships. I have sat in one of our sites and no-one has spoken to me literally all day.
Lockers are needed if hotdesking and docking stations so people don't need to carry power leads and can use big screens, proper keyboards etc. I also get a bit of RSI so I prefer an upright mouse (another thing I can't have in the hot desk environment!).
Plug sockets on TOP of desks so you can plug in laptops if you need to without crawling on the floor and every power socket to have a USB socket or two as well so people only need carry the lead, not the plug to charge their phones.
We have a concierge service, it seems to be available to book tickets for things, so could look into that (I've not used it).
If you have 'break out areas', look to have white board walls (and in meeting rooms). Also, set those noise dampeners in the ceiling so the sound doesn't carry all through the offices.
We have a kitchenette in each area with a pay machine for tea/coffee, a hot and cold water tap, fridge and m/w. We have a restaurant and café downstairs and an ATM which is useful.
The loos also have a drinking water tap as well as hand washing.
One place I worked they had soap, sanitising hand wash and hand cream in dispensers in the loo - in flu season the sanitiser was good. We also had some in the kitchen in my last place.