Honestly, as an Android user, I'd be happy with a Dialer app that doesn't crash, isn't slow to start up, and that, while in a call, actually generates DTMF sign

Honestly, as an Android user, I'd be happy with a Dialer app that doesn't crash, isn't slow to start up, and that, while in a call, actually generates DTMF signals of a useful minimum length instead of only during the instant my finger strikes the buttons. Hard-to-reach buttons is the least of my problems with Dialer.