Quick question, I'm so used to doing things on the fly with FSNav and now without it I am having to preplan my flight much more. Here's my question. Is there a way to add a waypoint into the flight planner without dragging the route line to an intersection or VOR? Instead just being able to put the ICAO code and it adding to the flight plan?

Nope

Now you know that you spent wisely when you bought FSNav :-)Like you I find the default planner a complete pain to use.

If you want very realistic FP's the FSflightplanner isn't any good, but for me it works like a charm... It's so easy! I don't understand why everyone says it's a pain to use. It couldn't be more easier! I think people mean to say it isn't that good because the plans aren't realistic enough... But you cannot say imho it's a pain to use because even the biggest fool can make plans with it.