I like the quickness of it but there's too many questions about the abstract nature of it.
Copy-pasting from RPGnet:
1. Stands? Wow. The Jojo's Bizarre Adventure jokes practically write themselves.
2. So two hill giants take only a single attack from a group of archers, whereas one roc bird would take 10 attacks? There's a certain limit to how much abstraction I'm comfortable with and this is kind of near the edge. The whole solo/stand thing forms a strange breaking point both in terms of actions taken and attacks taken. It looks weird to me.
3. If stands and solos (usually) make only one attack per round, how does this interact with creatures that can make multiple attacks per round normally? An owlbear normally makes three attacks for 7 damage each. Ogres make only a single attack for 13 damage. Under normal circumstances this means a group of owlbears would defeat a group of ogres in a fight... but if we switch to the Battlesystem it's the other way around? Is this how it works?
4. How do spells interact with these rules? What does a Fireball do to a stand? Does healing magic affect a stand? If I summon 9 critters, can they act like a stand or are they disregarded? Or are they each their own solo? For that matter, what does dragonbreath do to stands? Medusa petrification? Or heck, what about Sleep and other such spells that go by hit points? Since the stand is one abstract block of hp does that mean I can Sleep an entire group of 10 orcs all at once when its hp are low enough in some weird all-or-nothing effect that is completely unlike what would normally happen against 10 orcs?
5. The morale rules are weird. So let's say I have two units. One consists of two stands of archers (a skirmisher unit), and the other of 12 stands of heavy infantry (a regiment unit). So when even one stand of archers dies, the other might turn and run. But if every single stand of infantry dies, it's all cool and the archers won't need to make a save. Am I reading this right? I mean, I can handwave it but I was kind of hoping your system wouldn't need me to.
6. So if two solos duke it out amongst themselves they basically go in "normal time", yeah? Which is ten times faster than Battlesystem-time. Right. So, how does this interact with spellcasting? If I fight a solo, I can cast 10 spells during one Battlesystem-round? But if I fight a stand, I can cast only one spell?
In other words...
... if there's a stand, then in one Battlesystem-round I can cast one Lightning Bolt on them.
... if there's a stand with a solo dwelling amongst them, then in one Battlesystem-round I can cast one Lightning Bolt on them.
... but if there's a stand and there's a solo about 100 feet behind them then I can cast 10 Lightning Bolts, each of them catching both the solo and the stand in the paths.
(Or the stand is behind the solo, the details of positioning are not the issue here.)
Is this how it works? Please tell me this is not how it works?
All this is not a comment on the Battlesystem rules. The article is obviously not the complete rules so I expect that many of these issues might be addressed. I look forward to seeing the final form.