With that they try to "fix" something they have broken with the new formula. They wouldn't need to add that, if they wouldn't increase the needed needed squad-size that fast. While this is some sort of "addition", many casual players will struggle to support 3x training with their tools. I may even add 1-2 workshops by myself, as everything was fine with 5 by now, but it won't if 3 training queues are running 24/7...
But... what units should i train there? Most of the additional units are very situational or no real alternative at all. If they cost orcs, it doesn't even makes sense to train them for the tourney, as it may be even cheaper to negotiate provinces with orcs. compared to sending in orc-units worth of 2 weeks orcs-income.
It's nice that they try... to change things... but for me this is some sort of "desperate move" to somehow show the ppl "look we're listening! - look what we did for you!".
IMHO they should revert that change and revisit that whole thing. I'm open for any changes regarding the tourney, i'm open to spice things a bit more up, implement some more RNG units, increase SS growth and so on, but there still should be a rewarding part and it should be reasonable. Not getting from super easy prov. 1 to super-hard at prov. 12~14 (without anything), if you could even go further in the old tourney-system without any booster. Think about why you want to change some thing and make a proper approach, not just artifically limit things by making those things unreasonable hard. You want to limit the KP-income? Alter the way how the tourney is rewarding players. Make the drops RNG, add some additional stuff to it (like diamonds / RR or MM spells or even big KP-Packages - but at a very low chance) and that could be used as a reason why things may be harder, but more interesting now. With diamonds or other rare-drops there is also a reason, besides for the sake of "points", to push your limits now and then.
[EDIT:] You could even make tourney-events that increase these chances of those rare things to even motivate less active tourney players to take part there. Look... an event that doesn't take much work!
No costum sprites for new buildings etc., but ppl would be happy about such an event. Gosh the possibilities if you just think about that whole thing for 5 minutes!
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Look at the spire, you did nearly the same there. The difference between those 2 would be still the rewards (time instants / CC / scrolls vs enchantments / relics / etc.) and the open end (in theory) of the tourneys.
And finally: take out that AW/Expansion BS and never ever think about that again.