I'd rather not add too many minor variants of every element. If you need it breakable, use PIPE, otherwise PPIP. If you just want the start / stop functions you might be able to find other means to get what you want at the PIPE entrances.
Why do we actually need breakable PPIP we only need unbreakable PIPE used in high-pressure factories.For the flow control like @jacob1 said just use PSTN
If life of PPIP = 61 then Keep it at 61 and make it breakable (no this won't break old saves as who in their right mind has ppip with a life of 61 (plus life is used for generation of ppip and its going to be always starting at 60) )