Random is random, no compensations. As for your suggestions, they are not bad (as most aren't) but this is the bugs forum, not the suggestions forum. Also, it was already said that this is not a bug, but a random occurrence (or bad luck, whatever you call it).
Expanding the arena is always a slow and costly matter. Whether you expand it by 1 seat or by 1000, the constructors still need to bring all of the necessary machinery and materials, which takes time, of course. We could have reflected this with the price too, but decided the time factor is enough. You get an estimate and the rest is random or luck.
While we are trying to make Utopia as competitive as possible, giving everyone the same starting conditions would mean something completely different. For example, everyone should have the same starting players too, then. We don't want to make Utopia teams completely different from other teams, otherwise we would have taken a different approach on many other things too. Conditions vary a little, just like real life or the rest of BB, it's up to you how you make the best of them.