The Water Is Fine
Looking around the kingdom I'm in now I can say some of the worries we have about certain builds is unnecessary. Some comes down to the quality of the player. We have a dryad sage who's doing fine and has all age. We have avian tacs which have been striking t/ms all age. We have a couple players running dark elf heretics doing well; I had serious reservations myself. Bocans seem like a great deal of fun.
There are differences in our style of play. I've been ruining my own homes pump all age because I'm too sloppy to time this stuff out. Some guys don't handle chains as well as others, but it just takes a little tutoring to get players to feel comfortable, prepared and aware of what's important to retain when you're getting run over.
My tendency is to keep a roll of cash and enough thieves to steal a little from the enemy. Apparently lots of guys release thieves and release specs earlier than necessary. I'd imagine the fear is that of being PK'd and I can understand that. I'm active enough that I can flirt with retaining a high wpa and monitor my peasants down to the last few.
I've seen a lot more high defense chained provinces the last few ages. I'm happy to see these new approaches in the lower tiers. While I'm a proponent of high offense chained, I think there's room to stagger these builds for best results.
The way I'm setting up TVK is to offer an option. Not just the divisions, not just the race and personality, not just ways of looking at the game. You might have an idea for dark elf undead becoming progressively stronger or offset divisions with different array or focus. I've shown my ideal based in preferences. It goes without saying, you can do whatever you want, and my ultimate hope here is only as muse.
Tactically, the elliptical wave isn't particularly special. What it does passively is introduce the kingdom to warring differently, and encourages warring in ways relatable to military strategies.
If we look at Germany invading France in WW2 you'll note the offensive was on a broad front with the actual spearhead coming through the Ardennes. Spearheads are relatable to chaining in Utopia. Thus, when I see a wave that is exclusively designed to only engage one or two enemies my subconscious screams "Watch Your Flanks!"
Without designing in tactics to cut off enemy pincer movement we risk our entire attacker core. The reason they, chain waves, work and little harm is usually encountered is because many kingdoms use the same tactic. - If you've been around you may've seen entire attacker cores disabled by overpopulation like I have. This is because the enemy might be doing a fully t/m supported max gains wave vs a chain wave.