Measuring unappreciated offensive contributions

I've been reading alot of David Staples work of late. He got some good stuff that is out of the box type thinking which I like. He had a post today about how Dustin Penner and Erik Cole contribute to alot of goals but dont get as much credit (points). On top of Davids analysis it got me wondering how to measure this. After some thought, I came to the idea that measuring GFON/60 - PTS/60 would be a good indicator. Thanks again to Gabe Desjardins for his excellent work. Here are the Oilers results:

NAME	POS	GP	GFON/60 - PTS/60	GOALS/60	PTS/60	GFON/60
TOMGILBERT	D	22	1.76	0.18	0.35	0.53	1.05	2.81
DUSTINPENNER	LW	20	1.69	0.97	0.72	0	1.69	3.38
LUBOMIRVISNOVSKY	D	22	1.55	0.15	0.15	0.15	0.46	2.01
STEVESTAIOS	D	20	1.49	0.21	0.21	0	0.42	1.91
SHAWNHORCOFF	LW	22	1.42	0.61	0	0.41	1.02	2.44
FERNANDOPISANI	RW	15	1.33	0.66	0.33	0.33	1.32	2.65
SAMGAGNER	C	21	1.31	0	0.66	0	0.66	1.97
LIAMREDDOX	LW	7	1.11	1.1	0	0	1.1	2.21
SHELDONSOURAY	D	21	1.09	0.36	0.91	0.18	1.45	2.54
DENISGREBESHKOV	D	19	1.06	0.21	0.21	0.42	0.84	1.9
ROBERTNILSSON	RW	22	0.92	0.23	0.46	0	0.69	1.61
ERIKCOLE	RW	22	0.86	0.22	0	0.43	0.65	1.51
ETHANMOREAU	LW	22	0.63	0.84	0.63	0.63	2.11	2.74
JASONSTRUDWICK	D	19	0.51	0	0.25	0.51	0.76	1.27
ALESHEMSKY	RW	22	0.39	0.99	0.6	0.6	2.19	2.58
KYLEBRODZIAK	C	20	0.31	0.94	0	0	0.94	1.25
MARC-ANTOINEPOULIOT	C	22	0.28	0.28	0.84	0	1.12	1.4
ANDREWCOGLIANO	C	22	0.25	0.73	0.24	0.73	1.71	1.96
LADISLAVSMID	D	10	0	0	0.53	0.53	1.06	1.06
TIMSESTITO	LW	1	0	0	0	0	0	0
STEVEMACINTYRE	LW	10	0	0	0	0	0	0
JESSEBOULERICE	RW	2	0	0	0	0	0	0
ZACHERYSTORTINI	RW	12	0	0	0	0	0	0
THEOPECKHAM	D	1	0	0	0	0	0	0

My first observation (which came after looking at the data but should have been obvious beforehad) is that, by this metric, defenders score better than forwards. The second was that Staples was right about Dustin Penner whereas Erik Cole didnt rank as well. Cole seems to directly contribute offense and thats about it. Then I looked at the top 20 forwards in the NHL. I eliminated defenders (about 90% of the top 200 players by this metric were defenders) and players who either

a) Hadnt played more than 10 games
b) Dont play more than 10 minutes/game

Not surprisingly was Dustin Penner at 13th overall.

NAME	GFON/60 - PTS/60	POS	TEAM	GP	TOI/60	PTS/60	GFON/60
MIKERICHARDS	2.37	C	PHI	21	14.5	1.77	4.14
DANHINOTE	2.15	RW	STL	10	8.39	0	2.15
BLAKEWHEELER	2.05	RW	BOS	24	10.96	2.51	4.56
PATRICKO'SULLIVAN	1.92	RW	L.A	22	12.81	2.13	4.05
STEVENREINPRECHT	1.85	C	PHX	20	11.35	1.85	3.7
BRYANLITTLE	1.84	C	ATL	23	12.76	2.66	4.5
ERICSTAAL	1.82	C	CAR	24	15.13	1.49	3.31
TOMASHOLMSTROM	1.79	LW	DET	17	11.83	2.09	3.88
TOBYPETERSEN	1.79	C	DAL	21	7.99	1.07	2.86
PATRICHORNQVIST	1.77	LW	NSH	15	11.28	2.13	3.9
DEANMCAMMOND	1.73	LW	OTT	20	6.92	0.87	2.6
DUSTINPENNER	1.69	LW	EDM	20	12.42	1.69	3.38
JONSIM	1.69	LW	NYI	24	10.39	0.96	2.65
RICHARDPARK	1.68	C	NYI	24	11.84	1.06	2.74
MASONRAYMOND	1.65	LW	VAN	25	11.63	1.24	2.89
STEPHENWEISS	1.64	C	FLA	19	13.43	2.59	4.23
PETRSYKORA	1.62	RW	PIT	20	11.09	1.62	3.24
PETRSYKORA	1.62	RW	PIT	20	11.09	1.62	3.24
ALEXEIPONIKAROVSKY	1.6	LW	TOR	24	12.49	2.2	3.8

This metric obviously isnt a strong indicator of player performance. The only thing better than contributing to offense is by directly contributing (scoring then first assist then second assist ect) to the goal. But Dustin does contribute to offense that he doesn't get credit for. Another thing to consider is the Oilers lack of offense so if you scaled this metric by goal scoring per team Penner would probably rank higher.

If anyone wants current Behind the Net 5 on 5 data. I shared the spreadsheet I pulled the data into here.