It would be easy to see what's it's like to have it attached to you, just get a small block like an mp3 or something a bit of string my tubing is about 60cm long others have 30 cm or 15cm. get some medical tape stick the string to somewhere on your tummy, thighs or upper arms and see how you feel with it in your pocket or tucked in underwear etc or if you have one with a clip on try attaching it to clothes. See how you feel with it that will be the easiest way to give you an insight into it.
The main reason for going back onto injections is that people don't like having a bit of machinery attached to them, best to try before you buy so to speak. The other problems that the op talked about are fixable, an instrument is only as good as it's operator. When starting a pump off you need to be really intensive with testing and experimentation. The main reason for people getting a pump is better control and tighter control, but if you already have that then there are lots of people who don't who would love a pump. If you wanted to tighten up your control maybe some intensive testing and experimentation on injections would be better than going on a pump.
I love my pump I would never give it up, but I understand it's not what everybody would like. I spent years begging for one and in that time I researched every detail I could about it, so I was 1000% that I wanted one. If there are any questions you want to ask here is a really good place.