Spellcasters have Logical Spellcasting Progression
Pattern-Weavers may roll pattern attacks instead of the normal DC. a pattern attack for a pattern is 1d20 + spell DC -10, this is opposed by a monsters save bonus +12, some characters (PCs, bosses) may still roll saves
Timestop is a mixture of 2e and 3e versions, it stops time in a 10' radius, but is otherwise the same as the 3e/Pathfinder version, including being unable to effect timestopped creatures. (think Zeratul or Faceless void ultimate)
Healing patterns are Necromancy
Psi, magic, and ki do not interact by default, any ability list which contains Anti-magic field, dispel magic, detect magic, arcane sight, or a similar spell contains a version for psi and ki as well, this is also true in reverse.
Spell like abilities require any expensive components, though you may substitute them with experience at a rate of 1 XP per GP
Any pattern that had an XP cost changed to an expensive material component cost in pathfinder has had that change reverted, it now is an XP cost again.
XP costs for patterns are paid by the beneficiary, though the weaver may pay for them if they are a player character.
Metamagic (or any metapattern) rank adjustment decreases that normall apply per meta effect are per unique meta effect, so if you have a -3 to each metamagic applied to spell X, you can apply empowered once for free, but the second one costs +1