Just to echo others disappointment at such a player unfriendly change but then to 'remind' us of it, way to go adding insult to injury.
Assault battles have been cumulative since they were introduced with people building and spending resources on teams specifically because there cadence (up until now) we're a known entity leading to an ROI eventually. Now, you've devalued people's prior investment and added a disincentive for new players to build these teams.
Lots of dissatisfaction from the people I know about the game in general atm what with the raid, fleet changes and now this. Hope you know what your doing cg because a few more reminders like this and you'll get myself and my peers questioning whether this game is still the place for them to spend their time and money.
Revert this 'reminder' hem cadence change, fix fleets (just undo your recent fixes) and please please give us some news we can be excited about.