In what sense? If such a party existed I would wholeheartedly support it, but I would be strongly opposed to the RPP & POP merging. IRV & STV mean that the division has no real electoral effect & this division is the main thing (as slight as it may be) that is currently saving Atlasia from duopolistic hell.
IRV/STV regardless, I think a united party would allow conservatives to take control of Atlasia for the first time since it's creation, and to start to implement changes that have never been thought of before and thus, get the game moving once more.
I don't know if the parties should "merge" per se, but if we cannot get the support of the clear majority from both parties, creating a new party will only serve to divide us, not unite us. If you understand what I'm saying.
Also, I've edited the first post to include my basic proposal.