I am concern that if these issues are not addressed soon
it has been addressed for about 3 years now. maybe you weren't around to hear them!
and the solution that could gain the support of the majority is SegWit and Lightning Network. with LN you can have instant transactions with super cheap fees now.
the only thing left is for LN to be adopted more.
this criptocurrency will became obsolete agains others.
you know that most altcoins are forked from bitcoin one way or another, right?
and those that aren't have similar issues that you mentioned here!