TOTALLY! I was a bit of a bossy tart with the second one! roll eyes I would definately recommend birth support person / doula. we had one for second and she was AMAZING. She got there before husband, massaged by back, as it was homebirth her and my husband teamworked it to support me and get things done - like run a bath / heat towels. She also took lots of photos (we never got any of 1st til 24 hours old) so it was important to me (not of birth but strait after) so it took pressure off hubby, he could just soak up the moment with me. Also support person took me to shower and helped me so hubby could curl up with bub and snuggle. He really liked it, she didnt interfere or take over, Mike didnt feel like his role in it was gone, he loved having her there and said it made it heaps less stressful for him - he said when we go round 3 he definately wants her there again - me to!
Their role is to help make it special like mine but to also act as your advocate should the need arise so you dont get pressured into anything, they meet with you and find out what your dead against, only if nec, open to, hope for and definately want
Talk to your midwife and state exactly what you want, why the last 2 were bad and what is important to you.
Good luck!