Dash hasn't even fixed transaction malleability or implemented Compact Blocks. Bitcoin Core did these things ages ago.
There is also the giant issue of critical bugs in the ancient version of Bitcon that Dash is based on.
When it's time, we're going to troll this cargo cult coin at the protocol level and show the world why you don't waste resources on marketing before the crypto is secure....

I don't agree on most of your issues, however the security point is valid.
IMO the spend on advertising is the problem, and that derives from the excess amount up for grabs every month in the proposals budget. It leads to inefficient and spurious projects, where there are large and easy profits.
More resources need to be diverted to the codebase and security issues. If governed correctly, a large community would be a positive.