Re: I'm no Hollywood editor...
Agreed that iOS is the issue.
I know things the staff at my church do in iMovie on Macs that iMovie for my iPad won't let me do. It's pretty much only good for stringing together photos, from what I could tell.
Since my main personal machine (church stuff, not work) was Windows [1], I tried VDSC. The program worked fine -- it was just my having to learn [2].
1. No Macs in the house, but I'll spare the other details.
2. I also learned I'm never going to be a full-time A/V whiz like I imagined myself to be in high school.