Let me start off by saying I love Proclaim. We've been using OpenSong for years, but needing to switch between programs throughout the service was never a smooth operation, not to get into other difficulties we had.
So, we've been using Proclaim since it debuted, and here are a few of my problems/suggestions that I haven't seen anywhere else on the forum yet.
1. The Mac client is still crashing on us. I think this is probably due to our old Mac Mini running USB -> Video more than Proclaim, but it has been frustrating. We may have to try and budget in a PC purchase. In my testing, I haven't had any issues with the PC version, but I still can't get a video to complete start to finish on our Mac client.
2. Presenter view. While I find the "whole slide" view side scrolling on the bottom aesthetically pleasing, it uses a lot of screen real estate. OpenSong frustrated us with a small windowed (not re-sizable) view, but by showing us a text view of the slide contents, the people working the computer were quickly able to find the correct slide. I've heard from several of our volunteers that they can't quickly identify which slide to use next. The thumbnails can be fuzzy and hard to read, and the mouse over slow to come up when someone is trying to quickly advance the song. I'd love a minimalistic option for the controlling computer, giving the song lyrics more real estate than the entire slide. Some of the songs come up with more than 6 slides, and to make the slides legible, we can probably only see 4 or 5 on the screen at a time.
Thanks for a great product!