Pantheon's ult became more of a teleport, hightly unable to land on opponent and too easily be dodged

Coordination/teamwork or a bit of planning can make it really useful, so I don't know what you're talking about. The amount of times I've gone Jarvan or Amumu jungle and used my cc to trap them inside a 3-4 man gank is hilarious.

that is true, but that is when all are already in fight and i jump in afterward. I still think they should cut down the cast time or landing time a bit.

lol you can't walk out of it unless you're near the edge. If you're in the middle they won't escape.

No the ult is fine the way it is.

Probably what was intended, yeah. If he hit 400/700/1000 AoE magic damage regularly, he'd be broken as hell.

I was thinking that it needed to be reworked slightly as well, but with just some slight modification of its usage i found that it is immensely powerful still. Sure during lane ganks it can be difficult to use effectively, but in a team fight situation it is so easy to use it to split the team and force the ADC out of the fight by landing between them and the team.