This is exactly what I'm talking about - the value of the guild may decrease. The player's value is to grow.
It is easier to win with 925 LP than with 1000 LP.
It's a lot of work to do these whole guild switches, but it is an interesting theoretical possibility. I think the difficulty of it is likely to deter it from becoming "the" strategy.
You need to leave enough power behind in the "lose in 1000" guild to not lose *too* badly - 5th in a group of 7 or 5th/6th in a group of 8.
I tried this briefly for an "always in platinum" strategy on my main world under the old system because diamond rounds were getting to be no fun because of farming coops. That one was easier in the sense that the "time to lose" guild didn't need to do more than stay active (= 40 advances over the whole season) so I could ask some not so active in that world friends to hold it over. But it still became too much work to shuffle everyone back and forth for what it was worth.
Furthermore if you have a *lot* of guilds trying to do this shuffle just to get towers then suddenly there'll be a strange competition for those specific spots needed to get an easy diamond round next round - not everyone can have them
This might happen anyways amongst guilds that *aren't* shuffling people around. AND the easy diamond round might not be so easy if there's multiple semi-tough guilds trying to make it happen.
I think this is the kind of thing we can give it a little time to see if it develops before worrying about if it needs to be fixed (which could be as simple as only 1000-diamond getting championship tower frags - if it's needed). As long as they don't take 3 years to fix it, it should be fine