It's a nice nod. I've actually had the idea for lockers, like you , to make people feel they belong and give them a sense of ownership, but also on a different rationale, to make it easier for them to attend (I would love to see showers as well so members can come straight from work) and as a revenue raising move - I've suggested we charge rent on the lockers.
With my locker idea, they would be available for all. At the end of the day, the future of the lodge rests with
obtaining then retaining and
developing new members. That should be one of only the few goals of PMs and one of the primary ones. Support (not interference and not blocking) WMs should be their other role, along with assisting in the masonic development of members via ritual but especially education. Also to walk around smiling a lot and showering encouragement and happiness on all.
In my experience PMs having a job, and especially one they enjoy, will see them attend. In one lodge I know, that meant appointing a PM as support to each progressive officer seeing them prompt that individual and sit next to them. It's also created a link between the past and the future leaders. The problem with it is that some MM are using them as a crutch and I'm watching the results closely.
Flipping your problem around, why do the PMs who are attending do so ? I would ask them how to get your "purple" ('dark blue' here) how to attendee. There might be some on the fringe of occasional attendance, but I know the PMs we have here attend because they enjoy it and want to support their lodge and their friends and the future of the lodge.
I guess that would be key in my approach, finding personally satisfying (enjoyable) ways they can support the lodge.
We've done that by
- Giving them charges
- Making them mentors (not just ritual and education but also support in the lives of new brothers)
- Putting them in charge of EAs and FCs when we are working in higher degrees - during which they host discussions
- Getting them to work with specific officers at rehearsal in corners
- Giving them outside projects they then report on at lodge in lodge (newsletter, web site, building, almoners groups, GL, socials)
- Getting PMs to mentor and shepherd PMs into new roles, upskilling each other
- Giving PMs liaison roles with GL or other masonic bodies (like Masonic homes or wider masonic charity work).
I think you are completely on the right track brother - trying to positively influence how PMs
feel about the lodge to influence them to support it and its members. The lockers is simple a vehicle to influence their feeling, you should also try to look for less labour intense and more ways to influence how they feel.