We need an altcoin that improves the weaknesses bitcoin has
So none of the altcoins out there already, to be clear. They all use addresses like Bitcoin and are data-minable just as Bitcoin is. Perhaps more so given their smaller blockchains and lack of alternative clients.
at best you will duplicate the pattern and buy some time perhaps? If the underlying technology is identical, then it's not immune to the same effects. Some of the altcoins have departed considerably from the basic Bitcoin structure thus it takes more work to couple the various commercial systems to them, but it's not a major barrier. All the alt-coins are structurally similar if not identical to Bitcoin.
Confidence Chains IS immune to these effects. I re-factored some very low level elements.