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1. On HP, many people play for their own enjoyment and don't want to bother their heads with all sorts of rules and patches!
It's strange — once patching the game and then not having to think about morale (luck) — that's hard. But in every battle, on every turn, counting all the birds — that's easy?
Even in this tournament, there was an incident where one participant played the tournament not on the patch, but admitted it himself and replayed it on the patch! But how can you even tell if a tournament was played on the patch or not? NO WAY! So by introducing the patch, additional difficulties with verification will arise, and considering that on HP a phenomenon like "Mining" is widespread, where some people play 500 game days (and that, gentlemen, is 18 months, no more, no less!), verification becomes a downright terrible thing!
But checking whether a person played with the patch or not — that's simple. For example, you could request a turn-based final battle (or any other battle) and from that it will be clear whether the person played with the patch or not.
2. The patch is an UNOFFICIAL creation!!!! Who knows what might be discovered in it? Why should they take such responsibility upon themselves? After all, there were glitches and bugs in the first versions! Is there any guarantee they won't appear again?
And another thing! Why do many players run from HW to HP? Why? Think about it!
But I won't deny, HW has certain problems, and at the moment they are trying to resolve them.
Good luck, and a little less pessimism. ;)