They ended in November. Most common build that is being looked for for EE wars currently is ps tanks and the odd hansel(1 Attack building hansel)
Well, I wouldn't be so certain about that... When higher tiers (6 and higher?) eb were introduced, the devs clearly stated that hlbc sized players wiuld have better drop rates than small players (mistly guild hansels at that time). I wonder if that's still the case and if it continued to follow that logic for the latest tiers of ebs.