[MENTION=15371]RaptorWizard[/MENTION], I think you should explore this from a cognative function approach. Not MBTI. MBTI tritypes just seems like an impossible idea to me. Even though I agree MBTI is not absolute, (obviously) it seems very unwise to use an already subjective system and create a ridiculously outragious supersubjective system on top of it.
Now, I think cognative functions have a lot of truth in them, so if you don't want to conform to an MBTI type, then perhaps try to find a cognative function tree that fits you better?
Suppose I'd say my MBTI tritype was INTP, INFJ, ENFP. (Which it isn't but for the sake of arguement let's say I see parts of myself in these three types.
If you want to define it through MBTI it would mean that I switch my cognative functions between these three platforms:
INTP:
Dom: Ti
Aux: Ne
Ter: Si
Inf: Fe
shadow: Te, Ni, Se, Fi
ENFP:
Dom: Ne
Aux: Fi
Ter: Te
Inf: Si
shadow: Ni, Fe, Ti, Se
INFJ:
Dom: Ni
Aux: Fe
Ter: Ti
Inf: Se
Shadow: Ne, Fi, Te, Si
This all seems impossibly far fetched. I don't buy this as being a possibility.
Now you say you seem to be in a Ni-Ti loop, I'd argue that, but you know yourself better than me so I'll give the benefit of the doubt, so that would mean your cognative function processes would probably be something like
Ni+Se+Ti+Fe or possibly Ti+Se+Ni+Fe
That would explain why you feel related to three types. You're basicly an INFJ with a strong tertiary, causing your Fe to be inferior, relating you more closely to ISTP types because as a result your Se would also be more charged. And INTP types due to a strong use of your Ti and having inferior Fe.
Essentially being a type in itself that relates to three other types that most closely resembles the INFJ type as far as cognative processes are concerned.
I think something like that is far less far fetched than coming up with an MBTI tritype, which just seems odd.
Also, I don't understand your reasoning for putting INTJ in your tritype, with all due respect, INTP and INTJ are cognative opposites. Either create an entirely new idea on cognative processes to explain that or rule it out as an option. It's more likely to be a bridge between INTP, INFJ and ISTP, because the cognative processes in those three types do not differ that much.
PS: I don't think you use Ne from what I can tell by reading your posts, which lead me into the direction of you being most closely an INFJ, but that is not based on a whole lot of data, so don't take that too seriously. I'm just saying you should probably try to approach this from the basic building blocks and build your theory from that, rather than use an existing platform and try and twist it to your liking.