Repeating Ballistas in Seige Towers

It's a big annoyance feature of game. Nothing worse then watch your AI, uncessarily rush troops into arrow fire from walls, or do a frontal attack, whilst you're attempting to skillfully use multiple axes of approach to unbalance the defence. Why not use CNTRL-S, before ordering the attack if the risk is that great (so you can reload if RTW mucks you about), or simply use more siege towers like most others.

Reinforcements are available always AFAIK if they haven't moved on turn you attack. Reliably not having them under AI control, seems to depend on no General being present in their stack.

If CA, actually developed a Tabbed Army/Wing with sub-group mechanism, so you control more than 20 units feasibly (effectively merging some units in large battles to eg) Frontline Infantry block in centre), I'd be more interested in upgrading the game. As is MTW & Empire, just seem like graphical gimmick upgrades, rather than fixing the strategic and tactical shallowness issues.

I also think the Battle AI would do a better job, if it had concepts of fighting battle groups, rather than all these 1:1 unit attacks which fail to counter maneuvers. It'd have more chance to decide to do sensible things like refuse a flank, attempt to outflank, and also could better use appropriate troop mix, and skirmishers effectively.