Seasonal Hardcore is broken

[intruders]

After several seasons of hardcore seasonal lb it is obvious that most if not all participants get help from regular op hardcore players. So basically it is a matter of how many friends one has to get help from or how much gold they are willing to pay to be carried.

Which has nothing to do with skills and makes seasonal lb a joke.

Proposed solutions:
- disable party for seasonals for duration of the current season
- allow HC seasonals to party only with other seasonals in the same season

Once the season is over they should be able to run in any HC party.

Also disabling plat purchases would be great to put everyone in the same conditions.