Maybe some of these belong more in the ASM Hack Proposals thread, but it hasn't been posted in for years and I don't want to bump it.
•Halve X & Y values (i.e. power & hit rate) of abilities when using them through Math Skill
•Make 'Move-etc Up' abilities up work when stacked (& work properly with Cancel Movement QoL patch)
•Stop your units from getting free CT at unit changeover in 2-part battles (e.g. Velius, Altima fights)
•Stop Throw being affected by Blade Grasp
•Make Float status negate fall damage
•Make Counter Magic not use MP
•Restrict Teleport vertical range by Move (or Jump), like horizontal range is
Bugfixes & similar:
•Prevent units from going 'Missing' on propositions at chapter change (call back automatically)
•Prevent AI from pointlessly re-selecting performances (Although I think the 'Save CT' checkbox in FFTPatcher may reduce this)
•Fix 'poaching doesn't remove corpse in deep water' bug
•Fix game hang when using Jump while mounted in deep water
•Fix getting stuck in air if jumping with magic gun equipped on a Blade Grasp-user
•Bow animation glitch fix (hide arrow/bolt & don't show damage twice if using an animation other than FFFF)
•Cancel out of menu for 'prompted' battles like Lionel/Riovanes/Bethla
Lower priority:
•Allow AI to choose to mount chocobos
•Implement Class M-Evade
•Unlearn abilities & get (0-100%, configurable) of JP cost back
•Remove redundant movement ability column when using 'Combine Support and Movement' patch
•Allow multiple units to learn ability 'Blue Mage style' when hit all at once
•Enable custom palettes for monsters only for palettes 03-07
•Hide date & war funds displays when panning world map with square button
•Create an ability (active or passive?) that highlights tiles containing Move-Find items/traps
•Invisibly(?) increase success %s of actions by 1% if between 1-99%
•Halve X & Y values (i.e. power & hit rate) of abilities when using them through Math Skill
•Make 'Move-etc Up' abilities up work when stacked (& work properly with Cancel Movement QoL patch)
•Stop your units from getting free CT at unit changeover in 2-part battles (e.g. Velius, Altima fights)
•Stop Throw being affected by Blade Grasp
•Make Float status negate fall damage
•Make Counter Magic not use MP
•Restrict Teleport vertical range by Move (or Jump), like horizontal range is
Bugfixes & similar:
•Prevent units from going 'Missing' on propositions at chapter change (call back automatically)
•Prevent AI from pointlessly re-selecting performances (Although I think the 'Save CT' checkbox in FFTPatcher may reduce this)
•Fix 'poaching doesn't remove corpse in deep water' bug
•Fix game hang when using Jump while mounted in deep water
•Fix getting stuck in air if jumping with magic gun equipped on a Blade Grasp-user
•Bow animation glitch fix (hide arrow/bolt & don't show damage twice if using an animation other than FFFF)
•Cancel out of menu for 'prompted' battles like Lionel/Riovanes/Bethla
Lower priority:
•Allow AI to choose to mount chocobos
•Implement Class M-Evade
•Unlearn abilities & get (0-100%, configurable) of JP cost back
•Remove redundant movement ability column when using 'Combine Support and Movement' patch
•Allow multiple units to learn ability 'Blue Mage style' when hit all at once
•Enable custom palettes for monsters only for palettes 03-07
•Hide date & war funds displays when panning world map with square button
•Create an ability (active or passive?) that highlights tiles containing Move-Find items/traps
•Invisibly(?) increase success %s of actions by 1% if between 1-99%