Currently only players with Keep level 27 can access the building of the Arsenal to upgrade your troop level. The game administrators should allow earlier access eg at level 21 or 23. This is to give mid-range players who have invested time and effort to have a better fighting chance against higher level players. As it stands, this inability to upgrade one’s troops is skewed towards the unfair advantage of higher level players with the ability to upgrade. Earlier access will grant better gameplay balance and make it more enjoyable. Please seriously consider this suggestion for improvement. Thank you.