I’m ok with the ult delay because it is pretty significant and the cast time is fast. I usually spec for more DOT and use it as a dash and drop on enemy sentry. If you have the stun on it then it has so much killing potential it deserves a delay.
The beam I’ll agree with you. What is strange is it seems like you have to be closer to get the lock on than you do to keep it going - in other words I can keep beaming someone from farther away than it takes to first get it to hit them. Not by much but a little bit, so I work around it by dipping in close then stepping back and side stepping as it burns them.

