Today, I joined a battleground, and then I got with me, one level 16 and one level 39, agaisnt 2 full groups of experienced players cp 630.
At the begining we tried to fight. But there no point to fight when 4 players jump on you at the same time. Especially with news players.
No need to explain how it's not fun at all, being litleraly slaughtered without be able to do something for those poor low levels. (even for me, all fights outnumbered are almost impossible because of sustain nerf and poor survivability)
They had absolulety zero chances agaisnt experienced players. The worst is, we can't leave because if we choose to do it, we are punished by a 20 minutes timer. At the end we just waited at our base the end of the deathmatch for leaving without penalty. One of these players told if he knew it was like this, he never join battlegrounds and in the future he stick to quests and dungeons.
But the opposite is also true, when your team is dominating because you are fighting 4 vs 2 vs 2, it's very boring too.
This is what is happening too many times actually during battlegrounds.

I note many issues about balance in battlegrounds:
pre made groups,
low levels players,
Sigil power, (wich are totally overkill and contribute to unbalance)
procs sets, (and some others skills, say hi soul assault or destro staff ultimate)
And there is still some issues about class and skill balance. (stamina heals in no cp are very weak and bad)
The battleground game mode was a very good idea, and I will not lie, it's fun sometimes when all teams had an equal number of players, but there is still too many problems who are destroying the fun.
Seriously, please dear zenimax, create another category for battlegrounds at least for players below level 50, as you did for cyrodiil campaigns. (kyne) And fix these issues.
@ZOS_GinaBruno @ZOS_JessicaFolsom