Engineers: Really bad hold on level 7, like 20 leaks with 1100 value vs 2 furb and hermit is kinda meh. Your positioning also screwed you on level 3. Level 9 send was lol, but np, at least this shows that you are using your head even if it failed.
Grizzly: 1/0 for level 3 with 3 Grizzly+Ranger, kinda overkill.
One roll: too low income till 7, also overseer isn't worth it with just 2 Greymanes. Rider is pretty bad (200 range and very fast unit, ends up dying first), small Archers would be much better for example. Don't make Elite Archers after level 10, just stick to Greymanes and Hell Raisers.
Hmm, I'm not sure. I'm kinda 50/50 accepting/denying.
@Krumme your choice :p