Here are a few of the errata that my playing group uses. At least until an "official" errata document is made. Someday...
Namarie ![Elven [Elven]](https://lotrtcgdb.com/forums/Smileys/classic/elven.png)
Condition • Support Area
When you play this, add an
![Elven [Elven]](https://lotrtcgdb.com/forums/Smileys/classic/elven.png)
token here
for each hunter you can spot.
Maneuver: Discard a condition for each
![Elven [Elven]](https://lotrtcgdb.com/forums/Smileys/classic/elven.png)
token here. Discard this condition.
17U10 [Restricted: One per deck]
Frenzy of Arrows ![Orc [Orc]](https://lotrtcgdb.com/forums/Smileys/classic/orc.png)
Event • Archery
Spot an
![Orc [Orc]](https://lotrtcgdb.com/forums/Smileys/classic/orc.png)
minion to add 1 to the minion
archery total. Then add an additional 1 to
the minion archery total for each follower
you can spot.
18U79
•
Erkenbrand's Horn ![Rohan [Rohan]](https://lotrtcgdb.com/forums/Smileys/classic/rohan.png)
Possession
Bearer must be a
![Rohan [Rohan]](https://lotrtcgdb.com/forums/Smileys/classic/rohan.png)
Man.
Fellowship: Exert bearer to play a
follower from you draw deck. Reshuffle
your draw deck (limit twice per turn).
Skirmish: Discard a follower from play
to make bearer strength +4 (if bearer is
Erkenbrand, he is strength +5 instead).
18R96The other cards we did not create errata for, but if it was to be done, your ideas are very reasonable.