Dividends can be more reliable than share prices as they’re driven by
the companies performance itself and not by the whim of investors.

As part of a total return / reinvestment strategy, this income could be
reinvested into income assets or back into the equity market
depending on the relative valuations.

The emotional benefits of dividend re-investment.
In fact, with this investment strategy you can actually welcome falling share prices.

If you want to build a capital fund for part of your Snowball, you could have two investment pots and rebalance regularly maintaining similar percentages, depending on how each pot has performed.