Unearthing an old thread here, but I have a question about this: It feels like people also always have the choice to create blocks with arbitrary numbers of skips as well, right? (as in: Oh I didn’t see all those other blocks being generated, sorry 
)
Anyway, there might be incentives to always generate lots of these skip blocks, just in case the main chain will also create one or more skips and my skip chain might be longer?
For example, say the current chain is [A, B, C, D], with current next producer E. Then whoever would be the second block producer X after C could produce the alternative chain [A, B, C, skip, X]. Now if E does not produce a block, this alternative chain is just as long as the “main chain” and the next block producers would have to decide which one to choose? This might give more choice to influence the RNG than what was proposed above?
[In the worst case, E = X, in that case E actually has the choice between three options]
Does this make sense or is there some mechanism built in to stop this or do skips work in an entirely different way?