One of the things that I find interesting from a design perspective is the existence of adaptive systems that don’t presently help them out. That is, they may have cellular response systems which help them in all sorts of scenarios which an ordinary individual is not subject to.
The problem for Darwinian evolution, is both how do you create and then maintain such configurations in absence of strong selection? Even if one were to grant the ability of strong selection to build complex features (I don’t), many of these systems have no selection whatsoever going on for the average individual. There are backup systems and backups of backup systems.
Evolutionists from a Darwinian perspective usually try to explain this away by saying, “well, at some point in the past, there was sufficient selective pressure to make this happen.”
Even granting that, there is now a new line of research that shows that organisms are adapted to environments for which they can be provably not to have previously experienced: namely, space.
A group of researchers noted that cells began altering their gene expression immediately in altered gravity environments. That’s right, you were designed (there is literally no other word) to be able to adapt to other gravity conditions. You body immediately detects this change and then alters gene expression appropriately.