I believe it is safe to say even if VW is still popular ,the lower lv tiers are not. I my self am stuck at T2 jeuno and cant shout for any useful VwNMs because I'm unable to pop them. Lower tier shouts are extremely rare and almost never take off. I have on occasion been with a group 3 hours and at the end, only 5 of us willing to go. Its impossible to accomplish anything without willing participants. My proposed suggestion to VW is scale the power of VwNM to the match the amount of people under the Voidwatch status. With the lack of interest in the lower tiers, it is easier for players to call in favors from 1~5 friends/other players than to call for a full alliance. Restricting the pocs to what jobs are present in exchange with a weaker alignment increase seems plausible.That would be, its restricted to skill that a max'd out version of w/e job present would be able to proc in the normal VW attempt. The scaling down of course should only apply to the lower tiers that don't have r/ex gear. T3 jeuno and higher still have stragglers/people without the abbysite that want the gear. The only problem is those that are proactive are hindered due to the lack of player base involvement. So even if you're willing to shout, without the means to pop the NM or ability to gather enough of the right player its pointless. You have to hope that 1 of the people in your group is able to pop the NM. I wouldn't expect Ig-alima ( a tier 6) to be done with 6,even 12 players. but I don't see why lower tiers couldn't be scaled down. of course since it'd match the amount present if you did the VwNM with a full alliance it would spawn at full strength.
I apologize for the bad grammar and such a lengthy post. lack of sleep and a lot of initiative to try and make change doesn't mix well.