Great post! Though Bitcoin has lost some of it's dominance as far as market share goes, I don't think an expanding ecosystem of altcoins is necessarily bad for bitcoin's long term health.
Most of the coins are dumped back into bitcoin in the event of a dip, and they tend to complement each other.
"A rising tide raises all ships," as they say.

Nevertheless, it is great to see the other altcoins rising as well, it will definitely be interesting to see how well mainstream society will deal with cryptos in the near future.
-O.T.