I'd like to request this most magical of features. The ability to have a command block style string executed as a quest reward, or by a trigger quest. This would greatly enhance compatibility with every other mod which uses commands, and make the scope of command block magic and techniques available to the HQM author.

You can already do this technically. Triggerblock > Commandblock.

Requires chunkloaded blocks, and also has a hard time telling which player
activated it.

Implemented in #134