My problem is mostly just that the game might begin to feel stale much faster. Compare "oh, it's Veteran Xio, I'll be fighting a few Fairy-types, oh haha I hope it's not that Whimsicott with Swagger and I hope it doesn't have Prankster" with "oh, it's Cameraman Barrett, based on what lead it is I know this game will follow one of four flowcharts that I've memorized".
Randomization of teams can also result in a higher peak difficulty for your team, even if the average difficulty isn't much increased. Every team will probably have some selection of Pokemon it really hates facing, such that there's a small chance that you'd be facing 2 or 3 of them on the same team in previous Towers. Now the ground to cover to avoid such a scenario is a much smaller search space since teams are fixed. Even if not, the chance of such an occurrence is either greatly reduced or nullified.
I think the last point depends greatly on the nature of the teams that ILCA has constructed. I'm hoping they will be dynamic enough to not make the game too easy or too stale, but based off browsing sets I feel that a large number of encounters will play out in very same-y ways.
Randomization of teams can also result in a higher peak difficulty for your team, even if the average difficulty isn't much increased. Every team will probably have some selection of Pokemon it really hates facing, such that there's a small chance that you'd be facing 2 or 3 of them on the same team in previous Towers. Now the ground to cover to avoid such a scenario is a much smaller search space since teams are fixed. Even if not, the chance of such an occurrence is either greatly reduced or nullified.
I think the last point depends greatly on the nature of the teams that ILCA has constructed. I'm hoping they will be dynamic enough to not make the game too easy or too stale, but based off browsing sets I feel that a large number of encounters will play out in very same-y ways.