The algorithm for the Trina quests is a mystery to me.  Probably a combination of level and number of quests completed.  I do remember the number of wheels Trina asked for jumping dramatically, but I had ignored for quite a number of levels, which is why I suspect it's more to do with levels than number of Trina quests completed.

The number of wheels asked for by the airships increases by levels regardless of whether you do Trina quests or ignore her.

I also really don't feel like playing.   Too many of my Trina quests want airships and most of my airships want less than 99 wheels.

I didn't feel like playing. Actually there hasn't been much to play waiting on 10-part DQs. And Trina wants wheels every task. So...call me crazy...I started a 2nd game. I think I just like achievements

TiramaSue wrote:

I wish they would give us an achievement for completing blue key quests. It would be something to work on.  I wouldn't complain even if we had to complete 10,000 quests.

I think there have been missed opportunities for additional achievements. Blue keys would have been great, especially for higher level players who most likely only have DQs and/or Trina. Always wondered why they didn't just add double ones, twos, etc on the dice. And the same 3 new achievements for every seasonal event has gotten stale to me. I don't think I have filled my children's or grandchildren's albums near as much LOL.

I will say, though, glad the Castle isn't in a repetitive cycle yet. 
 

Looking at the MC Facebook page, it appears that the looping download problem is still affecting some players.  Could be a long time before we get an update.  And that will mean we'll probably wind up with very little time in between CC's when they resume.