Of all the possible security flaws... OpenSSL, a security-oriented library, having a vulnerability in the most fundamental security feature used by virtually everything... is the LAST thing anyone would have reasonably considered to be a risk to security.
Any reliance on external libraries is added security risk. Because Core is financial software the most paranoid security approach should be in place. So where external libraries are not essential they should be avoided.
It's much less confusing and makes it easier to use Bitcoin correctly.
Coin Control is handy, but inevitably a power user tool that is likely to give newbies the wrong idea.
Multiwallet support is unfortunately lagging behind since CodeShark went and made his own wallet instead.

This is Bitcoin
Core. You do not need to hide all complexity from the user. I'm accustomed to initiate all payments by myself - I dislike direct debit and similar things, because it gives me less feeling of control. Maybe this is also a question of cultural socialisation, so preference maybe different across countries - I don't know. Regardless, I think a Bitcoin Core user can be expected to know how to copy and paste Bitcoin addresses and type in the correct amount - there is no need for simplification.
There can be third party wallets which are "easier" to use.