It would be awesome if words would automatically be added for characters that you already know very well. For example, let's say I know 设 and 计. It would be awesome if 设计 were either automatically added or I was at least given a prompt asking if I want to add it. This would be a nice way for Heisig learners to accumulate useful vocabulary while studying the individual characters and I think even would help with retention of the characters themselves.

If you pull up the detailed information screen for a single character on the web (by clicking the magnifying glass), there will be a "Words containing X" area, which has a plus sign next to each word so you can quick add it. It's not exactly what you are suggesting, but pretty close!

My initial feeling is that you would be overwhelmed with vocabulary, especially as you progress into higher levels. I once bumped into a tool which can generate vocabulary lists sorted by frequency from given characters. This could work very well for you, just extract your known characters from Skritter and plug them in, then take however many new words you want. I have been looking, but have not been able to find it I'm afraid. Perhaps someone else knowns what I'm referring to.