Sorry to be brutally honest, but I've rarely seen anything so bad. That doesn't say 70's scifi to me, it just looks incredibly poorly executed and extremely amateurish. Examine lots of typefaces, look at proportions, think about it for a long time then start again, but with smaller ascenders and descenders. There really is no point critiquing this version as there is so much wrong here.
This is my first real attempt at building something. The archetype is derived from the LEDish look of typefaces seen in late 70's scifi movies. I penned versions of this in my undergrad days and wanted to commit something to digital form.. and open type/webfont it. Unfortunately, I was working more or less in a vacuum before finding you. I'll do my best to adjust it based on your comments and criticism.
The working files can be found here: http://github.com/timBrockman/SciFi78.git
Thanks in advance.
Cheers,
Tim