Hello Everyone, 

After playing both 1.e4 and 1.d4 extensively, I have concluded  the following: 

Openings I like facing after 1.e4: 

- Sicilian 
- 1...e5 2.Nf3 Nc6

Openings I wouldn't mind avoiding (at least some of the time) after 1.e4: 

- French
- Caro-Kann
- Petrov
- Annoying stuff like the Latvian and Elephant gambits

Openings I like facing after 1.d4: 

- QGD
- Slavs (all of them)
- KID
- Gruenfeld
- Dutch
- Benonis
- Tarrasch

Openings I wouldn't mind avoiding (at least some of the time) after 1.d4: 

- QGA
- Benko Gambit
- Budapest Gambit
- Von-Hennig Schara (or however you spell it) Gambit
- Albin Counter Gambit
- Nimzo Indian

Thus, my idea is to start with 1.Nf3, answering 1...c5 with 2.e4 and 1...Nc6 with 2.e4, but playing into 1.d4 openings via all of Black's other first moves. I have no intention of playing a Reti or symmetrical English. 

This may sound irrational. Why allow Black to play arguably his two best and most theoretical systems against 1.e4, instead of just playing, say, 1.d4/2.Nf3 to avoid annoying gambits? Well, it's a matter of trying to get interesting positions that I like and which I play well, rather than cutting down on theory or going for some sort of theoretical advantage. 

I already see some downsides to this move order though... Against the KID, for instance, I like to play the Saemisch, but this would no longer be an option, so I would have to play something else (any suggestions? I don't feel like getting mated by a kingside pawn storm). 

Likewise, I guess I would have to allow the QID if I want to get into a Catalan, because I no longer have the 1.d4/2.c4/3.g3 move order. This does not bother me though. 

Finally, for those of you who play 1.Nf3, how often do your opponents actually respond with 1...c5 and 1...Nc6? One could argue that the infrequency of transpositions to a Sicilian or Ruy Lopez warrant the study and maintainance of those openings a poor investment of one's time and energy, and that if one really wants to play them, one should just start with 1.e4. 

Have you tried anything like this? How did it go? 

Cheers!