Bleed, rot, and tainted could all be one condition though.
They are three completely different things though, so it is not clear to me what you would do here. Rot and Tainted are Poison, one of these deal damage and the other reduces Life. Bleed is bleeding, however they are all conditions that cause damage (or Life reduction) in different ways during upkeep.
I understand the desire to make things a bit more simple. All that will end up happening is the same thing that happened in Academy, the condition goes away, and instead it effect is written again and again and again on the card. So instead of having a simple concise location to read generic rules and their effects (i.e. the condition) they will be written on to cards and then your will have to review the FAQ to understand the ins and outs of it.
It really is a conundrum in game design for this particular game. If there were no new conditions implemented since the release of the core game, the design restrictions for new mages would be quite limiting and we would never get Frost (even though it Frost doesn't appear to need that design restriction in the first place.). New conditions are good for the game, they provide a single point of reference for players to understand game rules. I personally have no problem with them, other than the ones duplicated on spells in Academy to make things "simple".