Honestly I don't agree with you on your points here. I've been using it since 2011 and not even once it took more than a day (as you said days) to get confirmed. These cases could only happen if you used lesser amount on fee as required but if anyone uses the standard one, it won't take that long. It never meant to give full anonymity that's why it's pseudonymous. A technology like this doesn't need to be tweaked all the time just so it would be 100% modern to the eyes of some, specially when everything is working just as how it supposed to be.
Why should it take a day? Seriously it should take a minute tops. How the hell am I as a merchant gonna wait a day for a transaction to clear. What now I need to pay an escrow service? Just more middle men making the whole thing more expensive. You might as well just go back to VISA/MC.
Dash and other solves all these problems. Who cares what the cryptocurrency is called, as long as we're all using it effectively and getting rid of the banker parasite middlemen.