it took the first 23 years 3 Gundam animes to the licensed
Probably because there was no domestic anime market capable of supporting TV series releases at the time those shows were produced. Even only a few long OVA series and short TV could turn a profit in the late 90s. It's really not until DVD takes off that long anime TV series on DVD are really marketable at all in North America. Even then, the First Gundam films beat the TV show to market by a good few years, as I recall.
Previously, an anime TV series was only marketable if it could be aired on television, where it would be easier to get users familiar with the brand. Of the DVD-era Gundam productions-- SEED and 00-- both have been licensed promptly. Unicorn is being dual-released. We haven't gotten Stargazer yet, AFAIK, but Stargazer was a weird model kit tie-in.
and i a big fan of Yuusha franchise Bandai Us pickied the Worst one if they had an sense thay would of got The Brave Fighter of Legend Da-Garn or he Brave Fighter of Sun Fighbird the best 2 Yuusha Shows
My understanding is that GaoGaiGar could be licensed due to a rights loophole that lets Sunrise market GaoGaiGar separately from the rest of the Yuusha franchise. This rights loophole was allegedly negotiated with Takara back when Sunrise made the GaoGaiGar OVA.
The rest of the Yuusha series is still controlled by Takara, as far as I know. The rumor I've heard over the years from friends who work in the R1 industry is that Yuusha has been considered for release in the US but probably won't be because Takara's licensing requirements are allegedly ridiculous.
What I've heard is that Takara will not license Yuusha to any R1 distributor who can not promise consecutive TV airings of all seven series, accompanied by distribution of all of the toys to major retailers. The R1 licensees who have been interested in Yuusha are niche companies that simply do not have the ability to make this happen.
Incidentally, yes, I quite agree that Da Garn is far and away the best actual TV series to come out of the Yuusha franchise. GaoGaiGar is vastly more marketable, though.
and one of my faves Astroganger has not been pick up yet
Hardly any series produced in the 70s have been licensed for US distribution under any circumstances. Not even Rose of Versailles, which fans of Utena typically develop an interest in seeing, has been licensed (to my knowledge).
Most of 70s shows that have been licensed went on to become commercial failures. Most US anime fans simply do not want to spend money on old anime because the visuals are perceived as inferior to newer anime.
Most US fans feel that newer anime is likely to be better than older series in all respects, since newer US animation is entirely superior to what our industry produced through the 60s and 70s.