I'd like to reiterate that most births are absolutely fine or if there are niggles they are minor ones, but I can understand mum's feeling anxious and having had three children in two different hospitals I think the most important thing is a well briefed and assertive birthing partner.
Tell them that it is an essential role for you and your child and that it continues until you are both back home.
I always had OK if rather blase nurses, but my husband was fantastic when I was having the children. He is still very proud years later of the contributions he made whilst I was having the children and it definitely made him feel more involved.
He or she should be there to be on your side so I suggest you agree a few things before you go in.
One is, never ever allow the midwife not to check on you every 15 minutes or so (I personally don't think you need the nurse there every single moment in the early stages but thats just my view). If they leave for more than that he/she should go and get them even if that means opening doors to other rooms. (IME they are often chatting at the nursing station). Agree that in advance and emphasise that your partner may need to be more assertive than usual.
Tell them to ask the nurse for a specific update each time they do a check ie "fine" is not good enough. In later stages they should ask each time "is there any sign of foetal distress". This will make the midwife focus on what they are doing. You don't have to be awkward but you do want them to think that there is someone watching them closely. It is just human nature to take more care if you know you are under scrutiny and not just by someone in labour.
I'm sure most midwives do an excellent job but you are trying to manage out the risk of the odd one who is not.
People do tend to discount what you say when you are in labour so your birth partner is your voice. Your birth partner's job is to make what you want happen. If you want a drink or food they either get it if its nearby or organise someone else to get it. Tell them to take and keep a mobile with them at all times so you are never cut off from the outside world and can contact friends if you want your favourite nightie or something similar. They never leave you for more than it takes to go to the loo until you are in bed asleep and they come back as soon as they have had a couple of hours kip so, if for example, you have had a caesarian they should be back there looking after the baby with you.
If you want the room cleared (as happened to me on my 3rd child because I had a room full of nurses all twittering away at me to get out of the pool to give birth and I just wanted to stay in the pool and finish the job), they organise it.
If the room is filthy they complain straight away and say you want a cleaner down (I took spray dettol and bleach into hospital with me for the loos and washbasins anyway). If you don't ask you won't get.
Finally, if you are both being ignored your birth partner should say you want the consultant and the hospital manager bleeped and want to make a formal complaint there and then. They will have an emergency bleep contact so don't take no for an answer or accept that they can only be contacted in office hours.
Most problems seem to arise either because of laziness or because midwives are overworked and don't prioritise properly. An assertive birthing partner can help make sure you get your proper priority.