Thank you for your elaborated reply. Yes for smaller accounts brawl are a good way to earn SPS, this is still true. I play this game quite a while and had a lot of struggles but now i am on the highest tier and this is what the post is mostly about.
So for you question what could be done to make guild more interesting, i like your PvE idea. But it should be something which enforces people to join forces of course not in real time, but with a time span.
And finally we need a new gladiator set a some point. And when i arrives old gladiator cards should be unbounded (just my humble opinion).
!LOLZ

