I think I'm nearly done with 10b now and I have some comments...
First of all, in terms of content, this is probably one of the best hacks out there... It has many smart dialogues, with no grammer or text errors. Second, it has most if not all of the new moves, so it has good gameplay. Third, it's pretty long and has many areas to explore with many different side-quests. Fourth, you have access to many different types of pokemon and mega-evolutions. It really does have the best features I've ever seen in a hack. And last, it really doesn't have that many bugs, even at a rather early beta stage.
Now for constructive feedback. I hope you accept it.
1. I've said it before and I'll say it again, the pedophile/sexual content has to go. I don't know how old Red is supposed to be, but he's at best a young teen, you can't have texts of adults telling him "You have a nice body for a kid" or "Let me show you my mushroom".
2. Some mega-evolutions take a very different path than they do in the games. For example Mega-Pidgeot who is in official games a normal-flying type with high Sp.Attack, high speed and no-guard, is in this hack a steel-flying type with high attack and speed. This really makes him some type of Staraptor physical attacker copy, and so can't utilize his new special attacks (such has Hurricane and Air Slash). If All the mega's are going to be custom then you should release a document that includes their stats, type and abilities, so people would know which moves and nature to aim for. UPDATE: At a later part in the game I found out that the original mega-evolutions, with their proper abilities, also exist. So forget everything.
3. I understand that the purpose is to make the battles more challenging and prolong the gameplay, but it's pretty annoying that at some point the average trainer you battle against uses 5 full restores. It has gotten to the point that it's much better to use a weaker pokemon that does 60% damage to the opponent per hit (and can 2hko safely) than to use a strong pokemon that does 95% damage to the opponent per hit (and then it can take 3-4 attacks, because of the constant full-restore)
Overall I am pleased with the hack and I think every player should enjoy it.