Question about Evolution

[Whateverist]

Couldn't a case be made for at least some 'moments' of "punctuated equilibrium"?

Could it not be mostly tiny strokes over lots of time, with isolated episodes of large strokes happening very quickly?

In fact some tiny stokes have big time effects.  When you look at how embryos develop it seems as if one possible mutation is simply to change the number of iterations of a set of limbs.  That could make a pretty noticeable difference in a single generation.  But I imagine the odds of such a mutation being advantageous are probably even thinner since an optimal number of limbs has probably already been achieved.