Just my observations from SAV.
1. A new GB for the highest era of FOE gives rewards to speed up coins, medals, and a bunch of the same? Rogue's? Seriously?!? That amazes me the developers aren't coming up with new content to reward. Leverage your other games and rewards there? A little cross support. In Elevenar you have an enchantment that allows for the player to accrue past the 10 Knowledge points (up to 20). Nothing in FoE allows you to accrue past 10. You can collect past 10, but not accrue. Is this a big thing, absolutely not. It's something different though. How about a boost (similar to coin/supplies) that gives you 15 minutes for an extra pick in GBG. New boosts.....anything.
2. If I am not mistaken Inno was asking for input a few months ago on ideas for new settlements. Now they are making a GB that is dedicated to having a settlement open? With all the ideas that have been provided in the forum this was the final result? A more expensive ToR. I can even understand the no secondary reward if the first was great. Not the case though. Nothing around an extra turn for GBG, or goods of an era of your choice, or something useful.
3. I see a change was made to add one medal expansion (Thanks I guess). While offering 3 diamond ones? Is Inno really that petty they wouldn't do 2 and 2? Even if this keeps up with the averages for the last few era's. Seems like a miss to me. Especially when one expansion is 16 blocks, and just the GB is 24.
4. Something new, something to keep the older players engaged? I have looked and all I am seeing is Space Age Mars with new colors and a few changes.
Just my opinion. I'll stay in SAAB as I don't see the value of moving up an age. I'd say no to the FI as well. I would argue the Galata Tower has more value and usage to a high level player than the FI does. At least you get the chance of protection and goods for almost a 1/3 of the space.