Battle High:
Battle High to boost the last Party can be good but also be abused on purpose. Beeing the last team - because you focus on farming battle high instead of doing objectives - is already used to get the advantage of getting ignored and catch up later. I still like the idea of giving teams the chance to catch-up but it has to be intelligent. For instance beeing in relation to damage stats so only a really poor team gets an advantage. But there would also be other options to help like: A mitigation buff, extended invulerability, or higher rng on spawns in the own area but all those have to be intelligent and in relation on how the team really plays so it can't be abused. But in the end: Battle high is a drug, people play this mode for battle high, so it has to stay somehow.

I was up to write "i prefered the old system". Only kill counts, a death resets your battle high and the more you die the longer it takes you to respawn (the max time i think was 45 secs). Yes, that sounds cool in the first place because th kills get more stratetic but i already see top scorers beeing marked to keep them away from BH and as long as possible in the respawn loop.

Cheating / Multiboxing:
A bit of an issue right now - at least on my world - are premades that are likely multiboxers. It's groups that have low total damage but steamroll everything, that use teleport hacks or cc's in a way that isn't possible. I've seen enough groups doing always multiple perfectly synced lb's at once or are reacting on certain skills right when you cast them. And really, without something like an aggro-list - nobody would be able to notice my casts and targets and counter with sleep / silcence or stun a splitsecond after i casted phantom-dart and rescue my target. So this is definitely an issue. Like i said: It's on my world. On other worlds or dc's it can be different but unfortunately: Changes in this game affect every world or dc.

Matchmaking:
What we got now doesnt work. For instance i had multiple games today where i had to scroll two times to finally see someone from our or at least the other team. While i still enjoy to run Frontlines with FC Mates i would sacrify it for a single queue balance.

A more positive thing: Titles and Achivements
I would really like to see the addition of new titles or mounts. So there are more incentives for veterans. Something like titles should be easy to implement and could bring back a lot of veterans that can help to balance the game. Special achivements tied to healers would also help to have more active healers. But i know, unless there are rezzes Healers Achivements in FL might be a tough thing.