[Phanx]

The tag system has changed; oUF.UnitlessTagEvents no longer exists, and has been replaced with oUF.Tags.SharedEvents.

Here is an example of a working tag using non-unit events from oUF_Phanx:

oUF.Tags.Events["leadericon"] = "PARTY_LEADER_CHANGED PARTY_MEMBERS_CHANGED"
oUF.Tags.SharedEvents["PARTY_LEADER_CHANGED"] = true
oUF.Tags.SharedEvents["PARTY_MEMBERS_CHANGED"] = true
oUF.Tags.Methods["leadericon"] = function(unit)
	if UnitIsGroupLeader(unit) then
		return [[|TInterface\GroupFrame\UI-Group-LeaderIcon:0|t]]
	elseif UnitInRaid(unit) and UnitIsGroupAssistant(unit) then
		return [[|TInterface\GroupFrame\UI-Group-AssistantIcon:0|t]]
	end
end

Compare with a tag using unit events:

oUF.Tags.Events["powercolor"] = "UNIT_DISPLAYPOWER"
oUF.Tags.Methods["powercolor"] = function(unit)
	local _, type = UnitPowerType(unit)
	local color = ns.colors.power[type] or ns.colors.power.FUEL
	return ("|cff%02x%02x%02x"):format(color[1] * 255, color[2] * 255, color[3] * 255)
end

You will probably need to rewrite all of the tag definitions in your own layout to work with the new system.