1) We at the Warframe Wiki have no real affiliation with Digital Extremes (the Warframe devs). If you wish to give feedback on any aspect of the game, then you should do so through the Warframe Forums.
2) Generally people shouldn't use the title as the thread contents. Titles should consist of a rough categorisation/summation of what you wish to discuss eg 'Limbo Prime Unvaulting'. Anything further should be typed into the thread contents. Also if you wish to be easily identifiable (rather than typing what I assume if your IGN in the thread contents section) then you can create a Warframe Wiki account.
3) The relics are still in the game. Vaulting just means that no fresh relics are obtainable. If you really wish to obtain Limbo Prime and don't wish to wait until it is unvaulted in-future (since vaulting and unvaulting occurs alongside new PA releases) then you have a couple of options. You can try to find someone who has the relics and request they bring you along for runs, or you can trade with another player for the relics.
4) Requesting a particular item be unvaulted next isn't going to result in anything. The vaulting of items happens in the order they were originally released. Which and when items are unvaulted is determined by DE based roughly on how long they have been vaulted for. There is zero evidence that player request truly has any part to play in it.
Aside from waiting for unvaulting - there is still an option to luck out on some returning player opening one in your mission.
Or you can simply buy parts for plat from another player (from what I understand part of a reason they are in vault in the first place).