Hey again PA! =)
Sooo, yes! The game Auto-Saves your progress. You dont need to save. If you start a New Game, it will wipe out any progress and Orcs you've recruited.
Oh so about Summoning Costs, they incrementally get bigger everytime you summon. It's something our Game Designer wanted to try out, and at first I was hesitant as I've never seen that done in a gatcha before...but they convinced me! lol
The idea behind it, was we didnt want it to be a massive grind to get your 3rd and then 4th Unit right off the bat. The low summon cost will help in the beginning, but the scaling curve of the cost will plateau to around what we wanted the flat cost to be originally. We tested / tweaked said curve a few times, and we feel pretty good that it doesnt get TOO ridiculous by the time you're close to collecting them all.
As for future updates, as of right now, there are no plans for it. It's a one and done deal. BUT...who knows what lies in the future.^^