There are a couple things i'll miss about the format. Deck building was such an art, look at modern luxchomp lists. Completely teched out, with so many one-ofs and almost everything thought through. You won't be seeing much of that in HGSS-on. Expect a lot of decks like this:
around 10 spots for a main attacker
4 spots for a starter
around 5 spots for a second pokemon line or more consistancy trainers
12 energy
the rest:
- 4 comms will be commonly played
- 4 candy
a lot of copycat, pont, sage, juniper, etc.
And this stuff will WIN. I won't miss donks, but I will miss the skill involved in deckbuilding.
Also, I think mid to late game there will be a lot less skill. If you look at the decks that are expected to be metagame:
-Zekrom
-Emboar Varients
- Serperior
- Steelix
- Jumpluff
-Cincinno
- T-Tar
These decks require no skill. Expect almost all games to be: Player A sets up attacker. Player B sets up attacker. Player A kills Player B's starter. Player B hits Player A's attacker. Then it'll just go back and forth untill someone runs out of resources. There's no skill in that.