Mid-Summer Gala needs to be a little more specific (how the cards are dealt, do people get to choose what cards they want to put in their hands etc), but the last part of discarding your hand hurts quite a bit. I wish you can somehow get to retain your hand after the redistribution, since that'd be more fun.
For Timeshare I'm not too sure whether you'd get to hit the 5VP often. My gut says no but it's a duration card, and the 5VP thing could only be in effect during it's first turn (since game ends after the clean up phase, when the duration effect ends the card is cleaned up too). That remains to be seen.
So the deal with Mid-Summer Gala is that you deal one card to each player starting with yourself; I originally thought of having no discard but as it stands, you basically want to play it as the last card in your hand. A kind of "finale", if you will. The version without discarding was way too hard to price, I thought it might be worth at least 7 or maybe 8, cause it's a great pin just by itself.
I've tested out Timeshare a little, and that's basically the idea. It's not often that you hit 5VP, but it's a very cheap 5VP if you are sure the game is going to end before it becomes your turn again. Or, if you want to be able to stall the game so it gets back to your turn. It's pretty fun.
I was really hoping for:
Dethroned Room:
Choose an action. Play it 0 times.
Normal Room:
Choose an action in your hand. Play it once.
I may well just include Normal Room in the set; it actually combos rather well with things like Peddler, Conspirator, Horn of Plenty etc. Maybe I could call it "Absconding Room".