As a person who may be considered by some individuals to be a little on the loquacious side, I have found that, unlike for yourself, haiku can be far too constrictive on my penchant for pleonastic redundancy. The cinquain is a compromise on that, though playing "without a net" serves my natural state best.
Which is to say both, "Welcome" and, "Nicely done".
Cheers,
Marc