Originally Posted by
hastur
If your lab work is all done, move up. Otherwise, finish you lab work, or at least everything you imagine you might ever want as TH10, then move on.
Uber walls are purely optional, e.g. I am currently in Champs with a mix of level 8 and level 9 walls, and it's not a problem, the difference between raiding a base with level 8 vs level 10 walls isn't the main defining factor when it's all GoWiWhatever... I moved to TH10 once I'd maxed almost everything in the lab, at which point I had a small core of level 9 walls, the rest level 8. Now I have finished all my defense upgrades, have a few lab upgrades still left to do, and have about 40% level 9 walls, now doing about 1 new piece per day (yes, I am very much casual raiding now, like about 3 per day). I do not regret it one bit - it's been really fun, not a big grind at all. And my base can hold up just fine - occasional wins, plenty of 1-star losses.
p.s. I agree, level 20 heroes is purely optional, I went TH10 with heroes around 15, and got them both to level 20 without even trying. Now I deliberately spend DE so I don't max out all the time - a level 20 AQ is fine, and level 25 BK is good, it's definitely better for me now having them both available, than waiting a week (a week without my BK I can live with, but a week without my AQ means a week of struggling to beat tough bases, ugh - my farming days are done!)