Alice's Journey is the one that hooked me. I still play it regularly although I can almost play it with my eyes closed. But there's just no way I could rank the best ones! I do like the gimmick in one series (I think your character is Susan, aka the Warmistress). Plays through similarly to any other although you have a liaison that helps you out in their world to a minor degree. In the bonus chapter, you play as the liaison in roughly the same events.
An indicator of some kind might help some people but I'd probably never be satisfied with any edge scrolling. I have two major issues with it that I don't think can be surmounted: 1. I have minor sensory issues and the screen scrolling on its own just because I moved the mouse out of the way is irritating. 2. It's too slow when you have to cross a screen width and/or too fast when you just need a little movement; it just doesn't reflect what I'm going with the mouse. I've just never found any edge-scrolling setup to be comfortable. I've never even used Windows' Taskbar auto-hide. I did find the speed-up-when-holding-left-mouse gimmick. But I found it when I tried to click something at the edge which made me miss.
If the right mouse button was unused, I'd request a right-mouse-drag if possible (preferably with the ability to mirror each axis). That works for me because there's a direct link between the mouse and the movement making it deliberate.
As for inventory, I think it would be a tremendous help if you could just set it right back down in the same spot. Not pull something out of your inventory and put back (because I could see that messing with scripting) but set the item you just picked up back down so there's no chance of getting things out of order.