Do something with the results.
It is, after all, the 'Review' part of the Plan → Do → Review → Improve cycle. After evaluating what has been done, revisit your needs analysis for the unit and improve its design, production and deployment ... then do the whole thing again at the end of the next cycle.
Unfortunately, no matter how good you make your unit, the very framework of online learning keeps changing, so you will always be shooting at moving targets.
According to Jones & Buchanan1 (1996) the one unchanging characteristic of the Internet is that it never stops changing. This makes the ability to adapt to perpetual change an essential quality for both (designers) and students.
1 Jones, D., & Buchanan, R. (1996). The design of an integrated online learning environment - A paper presented at the Proceedings of ASCILITE '96, Adelaide